{"title":"Nuts","description":"\u003cp\u003eWelcome to Duchy Fasteners' comprehensive selection of Nuts. We understand the importance of reliable components for any project, whether you're a trade professional, a construction worker, or a dedicated DIY enthusiast. Our nuts range is carefully curated to meet diverse needs, ensuring you always find the right solution.\u003c\/p\u003e\u003cp\u003eOur inventory includes various stainless steel, nuts, crush nuts related to nuts, suitable for a multitude of applications. From general maintenance to specialized industrial uses, these products are designed for durability and performance.\u003c\/p\u003e\u003cp\u003eExplore popular items such as Stainless Steel Nyloc Nuts DIN 985 A4, A2 Stainless Steel Full Hex Nuts DIN 934, Stainless Steel Nyloc Nuts P Type DIN 982 A4-80 and more. Each product is selected for its quality and effectiveness, helping you achieve professional results every time.\u003c\/p\u003e\u003cp\u003eAt Duchy Fasteners, we pride ourselves on offering not just products, but solutions. Benefit from our competitive trade prices, high-quality standards, and fast UK delivery. Choosing us means choosing reliability and efficiency for your projects. Browse our nuts collection today and experience the Duchy Fasteners difference.\u003c\/p\u003e","products":[{"product_id":"a2-m12-shear-nut-st-st-304","title":"M12 - Shear Nut Stainless Steel 304 A2","description":"\u003cp\u003eA2 M12 SHEAR NUT ST\/ST 304 is constructed from A2 stainless steel, providing outstanding corrosion resistance and longevity. Designed to meet DIN standards, this component is perfect for secure fastening in construction, engineering, and mechanical applications. 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Perfect for construction, woodworking, and engineering applications. Available in various sizes to suit different project needs.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":50330869301566,"sku":"CUNTFS05A4","price":0.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/rivnutredcsk-steelknur_png_071b824c-98b4-4a20-9a1c-77aa45b496cd.png?v=1753893339"},{"product_id":"a2-m8-full-hx-nut-din-934-304-ss","title":"M8 - Full HEX Nut DIN 934 304 SS A2","description":"\u003cp\u003eNot just another accessory, the A2 M8 FULL HX NUT DIN 934  304 SS is engineered for those seeking a reliable solution to their fastening needs. Its innovative design makes it adaptable to different projects, whether it's securing outdoor structures or enhancing the durability of your equipment. Available in a variety of colours, the A2 M8 FULL HX NUT DIN 934  304 SS is not just functional but offers a decorative element to your installation.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":50426628538686,"sku":"A2FNUT08","price":0.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/Nut-ss_png_6730c1b3-8334-4a21-8f97-4ab124523bc1.png?v=1753885912"},{"product_id":"m8-channel-nuts-plain-st-st-a2","title":"M8 Channel Nuts Plain Stainless Steel A2","description":"\u003cp\u003eThe M8 CHANNEL NUTS PLAIN ST\/ST A2 is a durable, high-performance product designed for use in demanding environments. Made from premium materials, it guarantees long-lasting performance and reliability. 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Whether you're assembling, fastening, or sealing, this product will improve work efficiency and ensure the best results.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":50461497557310,"sku":"SSCNS08Z","price":0.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/channelnut-short_png_cac6c455-fed5-46ce-b6e1-c65707ceca5c.png?v=1753887559"},{"product_id":"m10-channel-nut-short-spring-zp","title":"M10 Channel Nut Short Spring Zinc Plated","description":"\u003cp\u003eThe M10 CHANNEL NUT SHORT SPRING ZP is a high-quality product designed for optimal performance and durability. Manufactured using premium materials, this product ensures long-lasting results and reliability across various applications. Perfect for use in construction, automotive, or electrical settings, it provides essential functionality for professionals and DIY enthusiasts alike. 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Its primary use is forming or restoring threads where a small, precise external thread is required.\u003c\/p\u003e\n\n\u003cp\u003eThe die nut is manufactured from high speed steel (HSS), typically M2 grade, and supplied with a bright ground finish to give a true cutting profile and long tool life. The thread form produced conforms to the ISO metric profile (M4 × 0.7) in accordance with ISO 724 (equivalent to DIN 13 for metric thread dimensions). When used with suitable setup and lubrication the die nut can achieve standard external thread tolerances consistent with ISO 965\/1 (tolerance class 6g for external threads).\u003c\/p\u003e\n\n\u003cp\u003eThis style of die nut is compatible with standard hand die stocks and machine holders. It is a through‑type die nut (no head or drive required) and is located and tightened in a die stock using the conventional securing screws. The split\/adjustable design commonly used for similar dies allows slight size adjustment and improved thread fit where required. Use cutting fluid and correct spindle speeds when running in a lathe or die head to prolong life and ensure clean threads.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and assembly work in automotive repair, general engineering, plant and machinery maintenance, instrumentation and model engineering, and small‑component manufacture. It is widely used where replacement fasteners are made on site, or where damaged threads need re‑cutting.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of the HSS die nut are its wear resistance and ability to retain hardness at elevated temperatures compared with carbon steels, giving longer life in production use. While HSS is not stainless, the bright finish provides moderate corrosion resistance; for highly corrosive environments consider coated versions or stainless tooling alternatives. The die nut is compatible with standard M4 nuts and bolts and conventional die stocks, making it a straightforward addition to workshop tooling.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a full range of metric die nuts and dies across common sizes; the M4 × 0.7 die nut is available individually and in small multi‑packs — please contact us for available finishes, holder options and pack quantities. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256362729790,"sku":"DIEN04","price":33.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/locknut-sc_png_ebcabff8-023c-4712-b5af-84531290e1ef.png?v=1781533232"},{"product_id":"5mm-x-0-8-hss-dienut","title":"5MM x 0.8 - HSS Dienut","description":"\u003cp\u003eA 5 mm x 0.8 HSS dienut is a split round die designed to cut or restore external M5 metric threads with a 0.8 mm pitch on bolts, studs, rods and turned components. It is intended for use in a standard die stock (hand-held die holder) or low-speed machine die holder and is suitable for both new thread cutting and repair of damaged or worn threads.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from high-speed steel (HSS), typically M2 grade, and is ground to provide accurate cutting edges. The thread produced conforms to the ISO metric thread form (60° profile) and is compatible with the tolerances and thread series defined by ISO 261\/965 and BS 3643; it will also suit common DIN metric thread forms used in UK engineering practice. The product is a split (adjustable) round die with an adjustment screw that allows slight size tuning for achieving the required fit and for compensating wear. It is finished with a precision ground face; some items incorporate a light black-oxide passivation to reduce surface corrosion and aid chip release.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and repair work in mechanical workshops, small-batch engineering, electrical enclosure assembly, instrumentation and model-making where M5 external threads are common. It is frequently used by automotive technicians, maintenance engineers and hobbyists to cut threads on studding, turned shafts and repair stripped fasteners. The HSS material delivers good red-hardness and wear resistance compared with carbon-steel dies, making it better suited to intermittent production and tougher materials such as free-cutting steels and some stainless steels when used with appropriate cutting lubricant and conservative feed rates.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits are long cutting life from M2 HSS, accurate ISO-compatible thread form, and the adjustability of the split die which allows a close tolerance fit or light tightening for repair tasks. Compatibility with standard die stocks and the common M5 × 0.8 thread size makes this dienut a practical choice for general workshop use.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a broad range of HSS die nuts across metric sizes and supplies them singly or in small packs to suit trade and DIY requirements; please contact us for available sizes and pack quantities.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256363647294,"sku":"DIEN05","price":29.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/locknut-sc_png_58304cd4-57bd-44a4-810d-8ae5c633c358.png?v=1781533245"},{"product_id":"6mm-x-1-hss-dienut","title":"6MM x 1 - HSS Dienut","description":"\u003cp\u003eA 6mm x 1 HSS dienut is a round external threading die designed to cut or repair M6 metric threads with a 1.0 mm pitch. Its primary use is to form or restore external threads on rods, studs and shafts by hand in a die stock or in a compatible machine die holder, making it suitable for both maintenance work and production environments where metric threads are required.\u003c\/p\u003e\n\n\u003cp\u003eThis dienut is manufactured from M2 high speed steel (HSS) and is supplied with a bright ground finish to ensure accurate cutting geometry and long wear life. The thread form produced conforms to the ISO metric profile (reference ISO 724) and aligns with common national standards for metric threads (DIN 13 \/ BS 3643). The tool is intended for standard M6 x 1.0 threads and is compatible with conventional round die stocks and die heads; no dedicated drive head or special shank is required for hand or light machine use.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include engineering maintenance, machinery repair, automotive and motorbike restoration, metal fabrication and plumbing where external metric threads need to be formed or reinstated. The HSS material and ground finish make the dienut effective on mild and medium carbon steels, aluminium, brass and other non-ferrous materials. Stainless steels and hardened alloys can be threaded with HSS dies but require reduced cutting speed, heavy cutting fluid and incremental passes to avoid rapid wear.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of an M2 HSS dienut are its elevated hot hardness and wear resistance compared with carbon tool steels, producing consistent thread form over a longer life. The bright ground finish provides dimensional accuracy and some resistance to corrosion; users should apply cutting fluid and store the die dry to maximise life. The tool is compatible with standard die stocks and thread gauges, permitting straightforward integration into existing tooling sets.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks this 6mm x 1 HSS dienut in single pieces and in multi-packs, and carries a broader range of metric dies from M3 up to M12 to cover common thread sizes. Contact us for availability and pack options. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256364007742,"sku":"DIEN06","price":21.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dowel_pin-sc_png_bb0e1609-5e9e-4c9c-ad4e-486701d4aee1.png?v=1780406456"},{"product_id":"8mm-x-1-25-hss-dienut","title":"8MM x 1.25 - HSS Dienut","description":"\u003cp\u003eThis is an 8 mm × 1.25 HSS dienut, a hand-operated cutting nut used to cut or repair external metric threads on studs, bolts and round bar. The primary use is to restore damaged threads or to form new M8×1.25 external threads quickly on-site or in the workshop without the need for a full die set.\u003c\/p\u003e\n\n\u003cp\u003eThe dienut is manufactured from high speed steel (HSS), typically M2 grade, heat treated and ground to provide a durable cutting edge and good wear resistance. The tool produces the ISO metric thread profile (ISO 68‑1) with a pitch of 1.25 mm and is suitable for standard ISO\/DIN\/BS metric threads (reference: ISO 261, ISO 965, DIN 13 and BS 3643). The internal profile is sized to cut to the M8 × 1.25 specification; the external flats are machined to suit standard spanners so the dienut can be driven by hand or with a short wrench where access is restricted. No drive recess is required because the outer hex is used to apply torque.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and repair work in automotive workshops, machinery overhaul, fabrication and general engineering where damaged studs and bolts must be quickly re-threaded. The M2 HSS construction makes the dienut suited to cutting mild steel, cast iron, aluminium, brass and many non‑ferrous alloys; it will also cut stainless steels with appropriate cutting fluid and slower feed rates. Because the HSS material retains hardness at elevated temperatures, it remains sharp longer than carbon steel equivalents and is better for repeated use.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits are long cutter life and edge retention from the HSS material, accurate ISO‑conforming thread form for interchangeability, and straightforward compatibility with standard spanners and die‑holders. As HSS is not stainless, users should protect the tool from corrosion by light oiling after use; some finishes such as black oxide are available to improve rust resistance where required.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a comprehensive range of dienuts and dies, available in a wide selection of metric sizes and pitches, supplied individually or in multi‑pack sets to suit workshop and field service needs. If you require alternative finishes or matched die sets, please contact our sales team. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256364794174,"sku":"DIEN08","price":37.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/greasenip-str_png_bc81d4ee-cfb1-41d6-9b7f-b966f3455063.png?v=1780406459"},{"product_id":"10mm-x-1-5-hss-dienut","title":"10MM x 1.5 - HSS Dienut","description":"\u003cp\u003eThis product is a 10 mm x 1.5 HSS dienut — a split, adjustable external thread die in high-speed steel intended for cutting or repairing M10 x 1.5 ISO metric external threads. Its primary use is to restore damaged threads, cut fresh external threads on rods and studs, or fine-tune thread fit where a compact, hand-held die is required.\u003c\/p\u003e\n\n\u003cp\u003eThe dienut is manufactured from M2 high-speed steel (HSS M2) and is supplied in a bright ground condition to produce clean, accurate thread flanks. It is manufactured to cut ISO metric threads (M10 x 1.5) compatible with ISO 261 \/ ISO 68-1 thread form and is suitable for use where BS 3643 and DIN 13 metric thread standards apply. The split (adjustable) design allows slight tightening or opening in a compatible die holder to adjust the thread fit. The dienut is used with a standard die stock or die holder rather than a screw-head drive, and its external profile suits common hand-held die spanners.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include general engineering workshops, maintenance and repair operations, automotive and agricultural machinery repair, fabrication shops and plant maintenance where on-site thread repair or short-run thread cutting is required. The HSS construction makes this dienut suitable for machining mild and medium steels, non-ferrous metals and some stainless steels when used with appropriate cutting fluid and correct technique.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits include the wear resistance and heat-softening resistance of M2 HSS for a long tool life compared with carbon steel dies, the ability to re-sharpen or re-ground if required, and the adjustable split design which permits control over thread tolerance for a snug or free fit. Where black oxide coated dienuts are preferred for improved corrosion resistance and reduced galling, Duchy Fasteners can advise on available finishes. The M10 x 1.5 dienut is compatible with standard metric thread gauges and die holders, making it straightforward to replace or integrate into existing tooling sets.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks an extensive range of HSS dienuts and dies in metric and imperial sizes—typically from small diameters up to M20 and in multi-packs or single-piece supply. Contact us for specific size availability, finishes and die-holder compatibility. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256364990782,"sku":"DIEN10","price":39.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/product-10mm-x-1-5-90deg-grease-nipple_f3ff2935-60d2-4784-b04e-535369c42c9c.webp?v=1780406463"},{"product_id":"10mm-x-1-25-fine-hss-dienut","title":"10MM x 1.25 - Fine HSS Dienut","description":"\u003cp\u003eA 10 mm x 1.25 fine HSS dienut is a circular external thread cutting die intended for restoring or cutting M10 × 1.25 metric fine threads by hand or in a die stock. Its primary use is to produce or renew precision external threads on bolts, studs and shafts where the finer 1.25 mm pitch is required instead of the coarser M10 × 1.5 pitch.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from M2 high speed steel (HSS) and is precision ground to maintain cutting geometry and wear resistance. It is supplied with a bright finish and a light protective oil coating to reduce surface corrosion in storage; for extended life in production consider using appropriate cutting lubricant. The thread form corresponds to ISO metric profile and is suitable for use to the tolerances described in ISO 965 and BS 3643 for metric threads, making it compatible with standard metric nuts and gauges.\u003c\/p\u003e\n\n\u003cp\u003eThis dienut is intended for use in a match die holder or hand die stock; it has the standard circular die shape with an adjustable split or set-screw arrangement allowing a small relief for slight thread fit adjustments when used in a die holder. As an HSS tool it is suitable for cutting into mild and medium carbon steels, alloy steels and some stainless steels when using proper speeds and cutting fluid. It is not a substitute for coated or carbide tooling where extreme production rates or very abrasive materials are involved.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include automotive and motorsport maintenance (wheel studs, suspension components), precision engineering and instrumentation, hydraulic and pneumatic fittings, and general workshop maintenance where fine-pitch metric threads give improved clamp-up and vibration resistance. The key benefits are the inherent toughness and wear resistance of M2 HSS, accurate ISO\/BS metric thread form compatibility, and the ability to re-cut or repair threads on-site with standard die stocks.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a range of dienuts and dies in metric sizes; the M10 × 1.25 dienut is available individually and in multipacks—please check our current stock list for available sizes and pack quantities.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256365252926,"sku":"DIEN10125","price":41.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_6e9297ce-197e-49f7-accd-eaf4b062e603.png?v=1781616599"},{"product_id":"12mm-x-1-75-hss-dienut","title":"12MM x 1.75 - HSS Dienut","description":"\u003cp\u003eThis 12 mm x 1.75 HSS dienut is a one-piece external thread cutting die designed to restore or form M12 x 1.75 ISO metric coarse threads on bars, studs and shafts. Its primary use is cutting external threads by hand in a die stock or by light machine work where a compact, robust die is required for on-site repairs, fabrication or small-batch production.\u003c\/p\u003e\n\n\u003cp\u003eManufactured from M2 high speed steel (HSS) and supplied with a black oxide finish, the dienut offers improved wear resistance and easier chip evacuation compared with plain carbon steel dies. The thread form conforms to ISO metric thread geometry (ISO 261 \/ ISO 965) and is compatible with BS 3643 dimensional practice, making it suitable for producing threads that meet common engineering tolerances. As a solid round die (dienut) it is not an adjustable split die; it is intended for clean, controlled passes with suitable cutting lubricant.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and repair in automotive and agricultural machinery, general engineering and fabrication, metalworking workshops and plant maintenance where replacing or repairing external threads on studs, threaded rod and bolts is required. The M2 HSS construction allows cutting and reforming of mild and alloy steels and, with correct lubrication and technique, can be used on stainless steels, brass and aluminium. The die is intended for use in a standard die stock or holder and is compatible with common workshop tooling.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of this HSS dienut are durable edge retention under repeated use, resistance to premature wear from higher cutting temperatures than carbon steel dies, and dimensional compatibility with ISO\/BS metric thread systems. The black oxide finish gives some added protection against corrosion and reduces light reflection during use; for optimal life, use appropriate cutting fluid and store dry.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a wide range of metric dies and dienuts across standard sizes; this M12 x 1.75 item is available to purchase individually or in small multi-packs for workshop convenience. If you require other metric sizes or matching die stocks, please contact Duchy Fasteners for availability. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256366235966,"sku":"DIEN12","price":48.14,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_25182ac2-c3f1-419c-8ec0-e7899239c3d4.png?v=1781616592"},{"product_id":"12mm-x-1-25-x-fine-hss-die-nut","title":"12MM x 1.25 - X-fine HSS Die Nut","description":"\u003cp\u003e12MM X 1.25 X-FINE HSS DIE NUT is designed for precision and durability, ideal for professional and home use. Crafted from high-quality materials, it ensures long-lasting performance in demanding environments. Perfect for mechanics, engineers, and DIY enthusiasts looking for reliability and efficiency.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256366596414,"sku":"DIEN12125","price":52.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_3b6e0c03-31b1-43fe-9506-1410f889e614.png?v=1781616584"},{"product_id":"12mm-x-1-5-fine-hss-die-nut","title":"12MM x 1.5 - Fine HSS Die Nut","description":"\u003cp\u003eThis is a 12 mm x 1.5 HSS die nut for cutting and restoring external metric fine threads (M12 × 1.5). It is designed to form or chase external threads on rods, bolts and studs where a fine pitch is required for greater adjustment resolution or where a coarse thread would not provide sufficient engagement. The die nut is intended for use in a hand die stock and is also compatible with light-duty machine holders where the toolholder accepts standard die nuts.\u003c\/p\u003e\n\n\u003cp\u003eThe die nut is manufactured from M2 high speed steel (HSS, DIN 1.3343) and is heat-treated to provide the hardness and wear resistance expected of cutting tools. The working faces are ground to the ISO metric thread profile for M12 × 1.5 and the item is supplied with a bright\/ground finish; some variants are offered with a protective black oxide — please check product code DIEN1215 for the specific finish. The thread type is external metric fine, produced to the ISO metric thread form; it is compatible with ISO 261\/965 thread series and follows the standard profile dimensions used in DIN\/ISO metric systems.\u003c\/p\u003e\n\n\u003cp\u003eExternally the die nut features flats to accept a standard die stock or spanner for secure, controlled cutting and adjustment. No special drive is required beyond the matching die holder. The cut geometry of the HSS delivers consistent thread form on common engineering materials including mild and medium carbon steels, brass, aluminium and some stainless steels when used with appropriate cutting lubricant and correct technique.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include general engineering maintenance, plant and machinery repair, automotive and agricultural repairs, fabrication workshops and any setting where thread repair or bespoke thread cutting is required. Key benefits are the durability and edge retention of M2 HSS, accurate ISO-compatible thread form for interchangeability with standard fasteners, and suitability for repeated re-sharpening. Corrosion resistance is limited for uncoated HSS; light oiling after use and storage in a dry environment are recommended to prevent rust.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks metric HSS die nuts across the common range and supplies the 12 mm × 1.5 die (DIEN1215) as single items or in workshop packs — contact us for available sizes and pack options.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256366924094,"sku":"DIEN1215","price":52.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_f715d40a-a057-45f4-918e-c35737f43bb8.png?v=1781616576"},{"product_id":"14mm-x-2-hss-dienut","title":"14MM x 2 - HSS Dienut","description":"\u003cp\u003eThe 14mm x 2 HSS dienut is an external metric die designed to cut or repair M14 x 2 threads (14 mm nominal diameter with a 2.0 mm fine pitch). It is supplied as a round die (commonly referred to as a “dienut”) for use in standard die stocks or holders and is intended for manual and light machine threading operations where accurate ISO‑metric threads are required.\u003c\/p\u003e\n\n\u003cp\u003eThis dienut is manufactured from M2 high speed steel (HSS) and is ground to size with a bright finish to provide precise thread form and good wear resistance. The thread form conforms to ISO metric profile requirements (ISO 68‑1) and is compatible with standard thread tolerances as defined in ISO 261 \/ ISO 965 and BS 3643 metric specifications; it is also suitable for use where DIN metric thread standards are applied. The tool produces an external metric thread to match ISO\/BS metric fasteners and will run in a standard M14 die holder. As a cutting tool rather than a threaded fastener, head and drive types are not applicable.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include on‑site maintenance, machine repair, fabrication and assembly tasks where external threads need to be cut or restored. Common industries are automotive and plant maintenance, general engineering workshops, metal fabrication, and MRO departments. The die is suitable for cutting threads in mild and alloy steels, brass, aluminium and many non‑ferrous alloys; for stainless steels and hard alloys use slow speeds, ample cutting fluid and appropriate HSS or coated tooling practice.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of an M2 HSS dienut include excellent hardness retention at cutting temperatures for longer tool life compared with carbon steel dies, consistent thread profile for reliable fastener fit and straightforward compatibility with ISO\/BS metric fasteners. HSS offers good wear and heat resistance; however, it is not stainless and provides only modest corrosion resistance, so parts should be stored dry and lightly oiled or selected in coated variants for corrosive environments.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners holds a comprehensive range of HSS dies and dienuts across the metric sizes, available as individual items and multi‑packs. If you require alternative pitches, coated options or matching die stocks, please contact us for stock availability. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256367120702,"sku":"DIEN14","price":37.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/stp-scol_png_065d4956-7ff2-4472-82cc-a02530152f88.png?v=1780406481"},{"product_id":"14mm-x-1-5-hss-dienut-r-h","title":"14MM x 1.5 - HSS Dienut Right Hand","description":"\u003cp\u003eThis is a 14 mm x 1.5 HSS dienut, right-hand, designed to cut or restore external ISO metric threads on rods, studs and shafts. It is intended for use in a standard die stock\/holder to produce an M14 × 1.5 right‑hand thread where a controlled, repeatable external thread is required for assembly or repair.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from M2 high‑speed steel (HSS) and supplied with a bright ground finish and a light preservative oil to reduce corrosion during storage. The thread form conforms to the ISO metric thread profile (referencing ISO 68‑1 for profile form and ISO 261\/ISO 965 for nominal sizes and tolerances), and the die geometry is produced to customary DIN\/BS die dimensional practice so it will sit correctly in standard holders. The product is a right‑hand thread with 14 mm nominal diameter and 1.5 mm pitch. It fits conventional round dienut\/die stock holders and is driven and adjusted via the die stock clamping screws rather than an integrated drive end.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include on‑site maintenance and workshop repair where studs and shafts require new or renewed external threads: general engineering, plant maintenance, automotive repair, agricultural machinery servicing, fabrication shops and HVAC installation. It is suitable for cutting threads in mild steel, aluminium, brass and many engineering plastics; harder or stainless materials should be cut with appropriate lubricants and conservative passes to avoid premature wear.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of the M2 HSS construction are superior wear resistance and edge retention compared with carbon steel dies, and good thermal stability during cutting. The bright ground finish ensures accurate thread form, while the preservative oil reduces the risk of rust in storage. Compatibility with standard die stocks and adherence to ISO\/British\/DIN thread forms makes this dienut interchangeable with other metric tooling systems.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners carries a broad range of metric dienuts and die stocks: individual die nuts like this M14 × 1.5 are available as singles or in economy packs, and our stock covers common sizes from small metric threads up to larger diameters to suit workshop and on‑site needs. Please contact us for available sizes and pack quantities. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256368038206,"sku":"DIEN1415","price":61.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_7e911dae-b740-4649-a9c0-27ca9760dc9a.png?v=1781616569"},{"product_id":"16mm-x-2-hss-die-nut","title":"16MM x 2 - HSS Die Nut","description":"\u003cp\u003eThis is a 16 mm × 2 HSS die nut for cutting or repairing external ISO metric threads on rods, studs and bolts. Its primary use is to re-cut damaged threads or to form new M16 × 2 external threads on shafts and bar stock where a robust, accurate metric thread profile is required. The die nut accepts the standard ISO metric 60° thread form and produces a thread spacing of 2.0 mm (M16 × 2).\u003c\/p\u003e\n\n\u003cp\u003eThe component is manufactured from M2 high speed steel (HSS) and supplied with a precision ground finish to the cutting faces. The HSS material provides the combination of hardness and toughness required for cutting ferrous and non-ferrous materials. The die conforms to the ISO metric thread profile (see ISO 68‑1 \/ ISO 261) and is produced to conventional die tolerances suitable for general engineering and maintenance use. The external form of the die nut is made to suit a conventional die stock or spanner drive, and the internal cutting edges are relieved to control chip flow and reduce work hardening on the parent material.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include on-site thread repair and manufacture in automotive and vehicle maintenance, plant and machinery overhaul, agricultural equipment servicing, mechanical engineering workshops and general fabrication. It is commonly used where replacement of a threaded component is impractical and when restoring thread integrity on shafts, studs or threaded rods.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of the M2 HSS die nut include excellent wear resistance and edge retention compared with carbon steel dies, consistent thread form when used with the correct lubrication and die stock, and broad compatibility with ISO metric fasteners. While HSS is not stainless, the ground finish offers some protection and the die can be supplied with a light black oxide or protective coating if enhanced corrosion resistance is required for storage or corrosive environments.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks metric dies and die nuts in a wide range of sizes and pack options; please contact us for availability of single units, multi-packs or matched die-and-die‑stock sets.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256368562494,"sku":"DIEN16","price":46.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dowel_pin-sc_png_06fea635-c3bc-4fa8-889e-c8028ea96ba7.png?v=1780406490"},{"product_id":"20mm-x-2-5-hss-dienut","title":"20MM x 2.5 - HSS Dienut","description":"\u003cp\u003eThis is a 20 mm x 2.5 HSS dienut: a solid round die for cutting or repairing external ISO metric threads on rods, studs and shafts. Its primary use is to form or restore M20 × 2.5 threads (ISO metric coarse series) on components where a new or renewed external thread is required, typically used with a compatible die stock or holder and appropriate cutting lubricant.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from high speed steel (commonly M2 HSS), heat-treated to retain a keen cutting edge and good wear resistance. The thread produced conforms to the ISO metric thread form and is compatible with DIN\/ISO\/BS metric standards such as ISO 261\/965 and BS 3643 for general thread dimensions and tolerances. The nominal size is 20 mm with a 2.5 mm pitch (M20 x 2.5). The die is supplied with a standard round die profile and is intended for use with right-hand threads; it is suitable for manual use in a hand die stock and in some machine holders where specified.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include mechanical maintenance, plant and machinery repair, fabrication workshops, automotive and agricultural servicing, rail and marine maintenance, and general engineering. The HSS material and heat-treatment make the dienut effective on mild and medium carbon steels, alloy steels and non-ferrous metals; for stainless steels and harder materials use slow feeds, correct lubrication and multiple light passes to avoid premature wear.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits are the durable cutting edge of HSS for long life and consistent thread form, dimensional compatibility with ISO\/DIN\/BS metric fasteners, and a protective finish (black oxide or similar) that offers modest corrosion resistance during storage and use. The solid die design delivers accurate thread profiles and is easy to seat and align in standard holders, making it suitable for both one-off repairs and repetitive workshop work.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a comprehensive range of metric dies and dienuts in sizes covering common workshop needs, available individually or in packs and sets. If you require alternative pitches or thread forms we can supply matching taps, die stocks and holders. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256369479998,"sku":"DIEN20","price":58.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_aca0442e-2bf4-435f-a661-490b3d28e2de.png?v=1781536883"},{"product_id":"m20-x-1-5-hex-dienut-r-h","title":"M20 x 1.5MM - HEX Dienut Right Hand","description":"\u003cp\u003eThis product is an M20 x 1.5 hexagonal die nut (right‑hand), a hand‑held external thread cutter designed to form or restore ISO metric fine‑pitch external threads on round bar or studs. It is principally used where a compact, wrench‑operated die is required for on‑site thread cutting, thread repair and maintenance tasks.\u003c\/p\u003e\n\n\u003cp\u003eThe die nut is manufactured from high‑speed steel (HSS M2 grade), hardened and ground to provide durable cutting edges and long tool life. The body is supplied with a black oxide finish to reduce corrosion and friction during cutting. The thread form produced conforms to ISO metric thread standards (ISO 261\/ISO 965) and is compatible with DIN 13 and BS 3643 metric profiles when used with the correct stock diameter and tooling. This is a right‑hand thread die producing an M20 nominal diameter with a 1.5 mm fine pitch. The external shape is hexagonal to accept a standard spanner or die stock\/holder for controlled manual turning; cutting flutes and a chamfered lead facilitate chip evacuation and easy start‑up into the workpiece.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and repair in engineering workshops, fabrication and plant maintenance, automotive and rail refitting, and general mechanical assembly where fine‑pitch threads are required. It is suitable for cutting threads in mild and medium carbon steels, brass, aluminium alloys and many stainless steels when appropriate cutting lubricant and correct technique are used.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits include the superior wear resistance of M2 HSS compared with carbon steel dies, the corrosion resistance afforded by the black oxide finish, and the convenience of a hexagon body for simple wrench operation or use in a die holder. The fine 1.5 mm pitch provides greater adjustment precision and better load distribution in assemblies than coarse threads where space or vibration considerations demand it. The die nut is compatible with standard metric thread gauges and customary tolerance classes when operated on correctly sized rod (nominal Ø20 mm) and with suitable lubrication.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a wide range of HSS dies and die nuts across metric sizes and pitches. This M20 x 1.5 hex die nut is available singly and in trade packs; please contact us for specific size availability and pack quantities.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256369938750,"sku":"DIEN2015","price":80.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_724570c0-d550-4ed3-8192-1f52a00f0158.png?v=1753886931"},{"product_id":"m24-x-3-0-hss-dienut","title":"M24 x 3.0MM - HSS Dienut","description":"\u003cp\u003eThis M24 x 3.0 HSS dienut is an external thread cutting die designed to cut or restore M24 × 3.0 metric threads (ISO metric coarse pitch) on rods, bolts and shafts. It is intended for use in a standard die stock (die holder) or compatible hand holder to reform or produce right‑hand external threads to metric tolerances used across engineering and maintenance work.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from high speed steel (commonly M2 HSS), giving a hard cutting edge and good wear resistance. It is supplied with a precision ground thread profile and a chamfered lead to ease thread engagement. The product conforms to ISO metric thread form standards (ISO 68-1 \/ ISO 261 thread profile and ISO 965 tolerances where applicable) and aligns with common DIN\/BS conventions for metric external threads (for example DIN 13 \/ BS 3643). The finish is a ground bright or black‑oxide surface to reduce rusting and improve chip flow; it is not stainless steel and should be stored oiled to avoid corrosion in humid environments.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include on‑site maintenance and repair, fabrication of structural components, plant and machinery overhaul, automotive and heavy equipment thread restoration, and general engineering workshop use. The M24 × 3.0 size is widely used for larger fastenings in construction, agricultural machinery, mechanical assemblies and heavy plant equipment.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of an HSS dienut are the material’s hardness and edge retention, which extend tool life when cutting ferrous and many non‑ferrous materials. When used with appropriate cutting fluid and correct feed, the die will cut clean threads in mild steel, alloy steels and softer stainless steels; compatibility with standard die stocks and metric tooling makes it straightforward to integrate into existing workshops. The ground profile delivers accurate thread form and good repeatability for repair and production tasks.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a broad range of die nuts and related threading tools in common metric sizes (commonly M3–M36), available individually or in multi‑packs, and can supply matching die holders and tapping accessories to complete your tooling set.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256370299198,"sku":"DIEN24","price":139.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_485a795d-58d3-46f2-818b-af1fc95738b0.png?v=1753886930"},{"product_id":"m27-x-1-5-hexagon-die-nut","title":"M27 x 1.5MM - Hexagon Die Nut","description":"\u003cp\u003eThis product is a hexagon die nut sized M27 x 1.5 mm, a hand and machine die intended for cutting, repairing or restoring external metric threads with a 1.5 mm fine pitch on rods, studs and bolts. Its primary use is to re-establish or create M27 x 1.5 external threads to the ISO metric 60° thread form, typically where a large-diameter fine thread is required.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from high speed steel (HSS M2) and is supplied with a ground, bright finish; a black-oxide finish is often offered on similar items to improve corrosion resistance and reduce chip adhesion. The thread form conforms to the ISO metric profile (60°) and is produced to the dimensional recommendations of ISO 68-1 with thread tolerances in line with ISO 965 \/ BS 3643 and the basic pitch series described in DIN 13. The hexagon exterior provides flats for a standard spanner or die stock; the part can be used in a dedicated die stock or with a suitable spanner\/socket drive for machine-assisted or manual threading where permitted.\u003c\/p\u003e\n\n\u003cp\u003eM27 x 1.5 is commonly used in heavy engineering, automotive and agricultural equipment, hydraulic and pneumatic systems, and in specialist fabrication where fine-pitch large-diameter threads are required for strength and fine adjustment. The HSS material makes the die suitable for machining carbon steels, alloy steels and many non-ferrous metals; harder or highly alloyed materials should be checked before use and cutting fluid is recommended to prolong tool life and achieve a clean thread form.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of this hexagon die nut include the wear resistance and edge retention of M2 HSS for repeated use, accurate reproduction of the ISO metric fine thread profile, and the convenience of a hexagonal body for rapid tightening and removal. The choice of finish affects corrosion resistance and chip behaviour, and the die is compatible with standard die stocks, spanners and machine holders designed for hexagonal dies.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners carries dies and die nuts across the metric range and offers M27 x 1.5 individually and in multipacks; please contact us for available finishes, sizes and pack quantities. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256371609918,"sku":"DIEN271.5","price":210.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_dbfc19e3-b304-401e-8fd0-287462834a60.png?v=1753886929"},{"product_id":"m35-x-1-5-hex-die-nut","title":"M35 x 1.5MM - HEX Die Nut","description":"\u003cp\u003eThis product is a hexagonal die nut sized M35 x 1.5mm, a hand and machine cutting die designed to form or repair external ISO metric fine threads on round bars and shafts. It is used together with a compatible die stock (hand holder) or machine adapter to re-cut damaged threads or to create new M35 × 1.5 external threads on components during fabrication and maintenance.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from M2 high‑speed steel (HSS), heat treated for cutting durability, and finished with a precision ground face to deliver an accurate thread form. The body is hexagonal to accept standard spanners or die stocks for tightening, and the internal profile cuts ISO metric fine threads with a 1.5mm pitch (conforming to ISO metric thread geometry). The product is manufactured to meet common metric thread standards including ISO 68‑1 and ISO 261, and is compatible with BS 3643 and DIN metric thread conventions when used with the correct alignment and cutting allowances.\u003c\/p\u003e\n\n\u003cp\u003eM2 HSS provides good wear resistance and red hardness, so the die is suitable for cutting common steels, stainless steel, aluminium and non‑ferrous alloys when used with appropriate cutting fluid and correct technique. Typical applications include on‑site maintenance and repair of drive shafts, hydraulic fittings, plant and machine assembly, and toolroom thread production. Industries that commonly use this size and style include heavy engineering, plant maintenance, rail, petrochemical and fabrication workshops where large metric threads are required.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of this hex die nut include the toughness and cutting life of M2 HSS compared with carbon steels, accurate reproduction of ISO metric fine thread form, and a serviceable hex body for secure holding in die stocks. The precision ground finish helps produce clean threads and reduces the likelihood of galling; using appropriate lubrication further improves surface quality and die life.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks metric die nuts and matching taps in a range of sizes and offers items individually or in multi‑pack options. If you require other metric sizes or matching tap and die sets, please contact our team for availability.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256372101438,"sku":"DIEN3515","price":210.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_9809966c-91bd-42f4-bb5f-a68a55c10707.png?v=1753886929"},{"product_id":"1-2unc-hss-dienut","title":"1\/2\"unc HSS Dienut","description":"\u003cp\u003eThe 1\/2\" UNC HSS dienut is a compact external threading tool used to cut or restore 1\/2\"-13 UNC external threads on bolts, studs and shafts without the need for a full round die and die-stock. Its primary use is hand or light-machine thread repair and finishing where access is limited or a small, nut-shaped form factor is preferred.\u003c\/p\u003e\n\n\u003cp\u003eManufactured from M2 high-speed steel (HSS) and heat-treated for cutting durability, this dienut has a bright-ground cutting face with a light oiled finish to inhibit surface corrosion in storage. The thread form is Unified Coarse (UNC), 1\/2\" diameter with 13 tpi (threads per inch), following the 60° unified thread profile. The die geometry is produced to be compatible with the Unified inch thread form as defined by ASME\/ANSI B1.1 and is suitable for use with workshop tooling that adheres to common DIN\/ISO\/BS inch-thread tolerances.\u003c\/p\u003e\n\n\u003cp\u003eThe dienut features a chamfered lead to assist with easy engagement and start of the cut and a full-profile cutting land to re-establish worn or damaged threads. It is intended for manual use on a short stud or for light machining operations; it is compatible with standard die holders and can be run slowly in a lathe or die stock where appropriate. As an HSS tool it will perform well on mild and medium carbon steels, alloy steels and many stainless steels when used with suitable cutting lubricant and correct technique.\u003c\/p\u003e\n\n\u003cp\u003eTypical users include engineering and maintenance workshops, automotive repair, agricultural machinery servicing, plant maintenance and light fabrication shops where re-threading of imperial fasteners is required. Key benefits are the wear resistance and edge retention provided by the M2 HSS material, accurate UNC thread profile for interchangeability with standard imperial bolts and the compact nut-style format that makes in-situ repairs easier than larger die setups.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a comprehensive range of HSS dies and dienuts across imperial sizes; the 1\/2\" UNC dienut is available individually and in small boxed packs for trade and workshop use. Contact Duchy Fasteners for available quantities and complementary die-holder options.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256372658494,"sku":"DIENC0050","price":36.03,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/locknut-sc_png_f38ce8df-6849-4e48-917e-a1c0232b4233.png?v=1780406497"},{"product_id":"5-8-11-unc-hex-die-nut","title":"5\/8\"-11 UNC HEX Die Nut","description":"\u003cp\u003eThis is a 5\/8\"-11 UNC hex die nut designed to cut or restore external 5\/8‑11 Unified National Coarse (UNC) threads on rods, bolts and studs. Its primary use is for hand or light machine thread cutting and thread chasing where a compact, hexagon-bodied die is required to remove damaged thread material or to re-establish full‑form threads to the ANSI\/ASME B1.1 UN\/UNF profile.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from M2 high speed steel (HSS), providing the hardness and hot‑work resistance required for cutting ferrous and non‑ferrous materials. It is supplied with a black oxide finish to reduce surface corrosion and hold cutting oil; the external hex shape allows convenient tightening with a spanner or locating in a die stock. The product is a solid (non‑split) hex die nut producing a standard right‑hand 5\/8\"-11 UNC external thread with the correct 60° thread form and pitch to match UNC fasteners specified to ANSI\/ASME B1.1. It is compatible with common thread gauges used to BS and ISO inspection routines for accepting unified threads.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and repair in engineering workshops, machinery refurbishment, agricultural equipment servicing, automotive restoration and general plant maintenance where imperial‑threaded parts are present. Because of the HSS cutting material it is suitable for mild and medium carbon steels, cast iron, brass and aluminium; for heavy stainless work a specific stainless‑compatible die or stepped‑cutting procedure is recommended.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits include the cutting life and thermal stability of M2 HSS, good surface protection from the black oxide finish, and direct compatibility with 5\/8\"-11 UNC fasteners and fittings. The hex external form provides quick engagement and clearance in tight spaces and is straightforward to use in standard die stocks or with a spanner for manual trimming and repair.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a wide range of imperial and metric dies and die nuts, available individually or in assorted packs and sizes to suit workshop and trade requirements. If you need specific pack quantities or a matched die stock, contact Duchy Fasteners for availability. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256373543230,"sku":"DIENC0062","price":54.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/boltimp-zp_png_fdaa1cb2-bdb8-40d0-aa02-2c5f4b41a404.png?v=1780406501"},{"product_id":"3-8-unf-hss-dienut-rh","title":"3\/8\" UNF HSS Dienut Rh","description":"\u003cp\u003eThis product is a 3\/8\" UNF HSS die nut, a right‑hand (RH) external threading die supplied in the compact ring style for use with standard die stocks and holders. Its primary use is cutting, repairing and restoring 3\/8\"‑24 UNF external threads on bolts, studs and turned parts by hand or in light machine applications.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from M2 high speed steel (HSS) to ISO 4957 material specification and is hardened and tempered to provide the wear resistance and edge retention required for repeated thread cutting. The thread form conforms to the Unified National Fine (UNF) profile, 3\/8\"‑24 TPI, in accordance with the Unified thread standard (ANSI\/ASME B1.1). The die is supplied as a right‑hand cutting tool; it is a solid ring‑type die designed for use in a compatible die stock or holder, with a precision ground cutting face and lead chamfer to start threads cleanly.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include automotive thread repair, maintenance of machinery, engineering workshops, plant maintenance and general assembly work where imperial fine threads are required. It is suitable for use on mild and alloy steels, brass, bronze and aluminium; when cutting tougher materials such as stainless steels, reduced cutting speeds and cutting fluid are recommended to preserve tool life.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of the M2 HSS 3\/8\" UNF die nut are its cutting durability and dimensional stability under heat, giving consistent thread form over many uses, and close conformity to the UNF profile for compatibility with mating fasteners. As a carbon alloy HSS tool it is not stainless, so corrosion resistance is limited; occasional oiling and storage in a dry environment will protect the tool. The HSS material delivers greater hardness and wear resistance compared with carbon steel dies, extending service life in production and repair roles.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks this 3\/8\" UNF HSS die nut individually and in multi‑pack options and offers a full complement of imperial dies, die stocks, taps and holders to support workshop and field requirements. If you need alternative sizes or matching taps, please contact our sales team for availability. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256373903678,"sku":"DIENF0037","price":34.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dienut_png_fd7993fd-2bed-41d6-b5be-c169d65315dc.png?v=1781616561"},{"product_id":"1-2-unf-hss-dienut","title":"1\/2\" UNF HSS Dienut","description":"\u003cp\u003eThis is a 1\/2\" UNF HSS dienut, a hand-operated external thread die in a nut-style body used to cut, chase or repair 1\/2\"–20 UNF external threads on rods, studs and bolts. Its primary use is to restore damaged thread profiles or to produce fine-threaded external fasteners where Unified National Fine (UNF) form is required, typically during maintenance, machining or on-site repair work.\u003c\/p\u003e\n\n\u003cp\u003eThe cutting element is manufactured from M2 high speed steel (HSS) to provide good red hardness and wear resistance during repeated cutting operations. The internal thread form is 1\/2\" UNF (20 tpi) and is produced to the UNF thread profile as defined by ASME\/ANSI B1.1, making it compatible with standard UNF fasteners. The dienut is presented in a round die body with a hexagonal outer profile so it can be used with a conventional die stock or simply turned with a spanner; the die has a chamfered lead to ease engagement with the workpiece. The tool is supplied with a light protective oil coating; it is uncoated HSS rather than stainless, so use of cutting fluid is recommended when working with stainless or abrasive materials and the tool should be stored dry to avoid surface rust.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include automotive repair (engine studs, suspension components), engineering workshops, plant maintenance, fabrication and tooling shops where fine-pitch imperial threads are specified. The M2 HSS construction gives a long service life when cutting carbon steels, alloy steels and most non-ferrous metals; for hard stainless steels, slower feeds, appropriate cutting fluid and pecking are advised to preserve edge life.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits are the accurate UNF thread profile for interchangeability with standard fasteners, superior wear resistance compared with carbon steel dies due to the M2 HSS material, and ease of use in standard die stocks or with spanners thanks to the hex outer form. Corrosion resistance is limited (typical of HSS); protective oil and correct storage mitigate surface corrosion.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks dienuts and dies across the common UNF size range and supplies single items or small packs for maintenance crews. If you need multiple sizes or a matched set, please contact us for availability and pack options. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256374264126,"sku":"DIENF0050","price":35.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/Socket-capsc_png_5c22495f-c5ba-4578-b372-2b3f6d63041b.png?v=1780406509"},{"product_id":"1-2-12-bsw-hss-dienut","title":"1\/2\"-12 BSW HSS Dienut","description":"\u003cp\u003eThis is a 1\/2\"-12 BSW HSS dienut, a hand tool used to cut, restore or chase external imperial threads on studs, bolts and round bar to the British Standard Whitworth (BSW) form. It is primarily intended for workshop use where 1\/2\" diameter, 12 threads per inch Whitworth threads are required, for repair or production of external threads on mild steel, alloy steels and other machinable materials.\u003c\/p\u003e\n\n\u003cp\u003eThe die is manufactured from high speed steel (HSS), typically M2 grade, and is hardened and tempered to retain cutting edges at elevated temperatures. The cutting face is ground to the BSW thread profile with a 55° Whitworth thread angle and rounded crests\/roots in accordance with the British Standard Whitworth thread form. The tool is supplied with a bright\/ground finish and a light protective oil to resist corrosion during storage. The dienut is presented in a hexagonal body so it can be operated with a standard spanner or fitted into a suitable die holder designed for round dies.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include maintenance and restoration of classic British motor vehicles and motorcycles, marine and agricultural repairs, general engineering workshops and any installation where original Whitworth fasteners are used. It is particularly valuable in heritage restoration, plant maintenance and on-site repair where re-cutting damaged external threads avoids the need for replacement fasteners or components.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of this HSS dienut include superior wear resistance and edge retention compared with carbon steel dies, good heat resistance for sustained cutting, and accurate thread form that ensures compatibility with existing BSW bolts and nuts. The hardened M2 HSS material offers a long service life when used with appropriate cutting lubricant; the hex body ensures positive drive with common hand tools and die stocks.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners holds a comprehensive range of taps, dies and dienuts in imperial and metric sizes. This 1\/2\"-12 BSW HSS dienut is available as a single item and as part of boxed die sets; please contact us for stock sizes and pack options. \u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256375640382,"sku":"DIENW0050","price":71.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/Socket-capsc_png_e1498d17-f99a-4594-b33d-5d8e67c9cc6c.png?v=1780406513"},{"product_id":"5-8-11-bsw-hss-hex-dienut-r-h","title":"5\/8-11 BSW HSS HEX Dienut Right Hand","description":"\u003cp\u003eThis product is a 5\/8-11 BSW HSS hex dienut, a hand and machine die designed to cut or restore external Whitworth threads on bolts, studs and bar stock. Its primary use is producing or refurbishing 5\/8 inch diameter threads at 11 threads per inch in the British Standard Whitworth (BSW) form for right-hand fastening applications.\u003c\/p\u003e\n\n\u003cp\u003eManufactured from M2-grade high speed steel (HSS), the dienut offers the hardness and heat resistance required for repeated thread cutting. The BSW thread form uses a 55° thread angle and this dienut is ground to the correct profile for BSW; it is intended for producing external threads and is specified as right hand. The item is supplied in a hexagonal form so it can be driven by a suitable spanner or fitted into a compatible die stock for controlled application. No surface plating is normally applied to HSS cutting dies, but they may be supplied with a bright ground finish; black oxide versions are available by request for improved corrosion protection in storage.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include engineering workshops, plant maintenance, classic vehicle restoration and heritage engineering where Whitworth threads remain in use. It is commonly used by automotive restorers working on British cars, by agricultural and railway maintenance teams, and in situations where original BSW fasteners need repair or replacement. The dienut is suitable for use on mild steel, cast iron and non-ferrous alloys when used with appropriate cutting oil and correct technique.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits include the wear resistance and hot hardness of M2 HSS which provides long tool life when cutting threads; accurate reproduction of the British Standard Whitworth thread form for compatibility with existing BSW fasteners; and the hexagon shape which allows positive wrenching or use in die holders. While HSS offers excellent cutting performance, users requiring higher corrosion resistance should consider alternative finishes or stainless options depending on the application.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a comprehensive range of dies and dienuts in imperial BSW sizes, available individually and in multi-packs. Please contact us for specific pack sizes and availability.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256375902526,"sku":"DIENW0062","price":56.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/setimp-sc_png_6f506275-0304-4b0c-af31-7c2720b8b0b2.png?v=1780406517"},{"product_id":"7-8-bsw-hss-dienut","title":"7\/8\" BSW HSS Dienut","description":"\u003cp\u003eThis product is a 7\/8\" BSW HSS dienut, a circular cutting die designed to restore, clean or cut external British Standard Whitworth (BSW) threads on bolts, studs and rods. It is intended for use in a standard die stock or holder to cut or reform 7\/8\" BSW threads where imperial Whitworth fastenings are required, such as repair work, restoration or on-site maintenance.\u003c\/p\u003e\n\n\u003cp\u003eThe dienut is manufactured from high speed steel (HSS, nominally M2 grade) and is heat treated and ground to give a durable cutting edge with good red hardness and wear resistance. The thread form is BSW (British Standard Whitworth), with the characteristic 55° thread angle and rounded crests and roots, providing compatibility with traditional Whitworth fasteners. The die is supplied with an oil protective finish to reduce surface corrosion during storage and use, and the HSS material allows occasional regrinding for extended service life.\u003c\/p\u003e\n\n\u003cp\u003eTypical applications include engineering maintenance, classic vehicle and motorcycle restoration, railway and steam heritage work, agricultural machinery servicing and general industrial repair where Whitworth-threaded components remain in service. The dienut is especially useful for machinists and fitters who need a portable method of re-forming damaged external threads or cutting new threads onto existing shafts where BSW is the required standard.\u003c\/p\u003e\n\n\u003cp\u003eKey benefits of this HSS dienut are its wear resistance at elevated cutting temperatures, toughness to resist chipping, and suitability for use on mild steel, low alloy steels and most common engineering materials. Because it uses the Whitworth profile it is compatible with existing BSW bolts and nuts; being an HSS tool it offers a longer life than carbon steel dies and can be sharpened if necessary. It is compatible with standard handheld die stocks and machine die holders designed for round dies.\u003c\/p\u003e\n\n\u003cp\u003eDuchy Fasteners stocks a comprehensive range of imperial hand and machine dies and dienuts, including Whitworth sizes. The 7\/8\" BSW dienut is available individually, and we also supply matching BSW tap and die sets and replacement packs across the imperial range to suit workshop and on-site requirements.\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"Default Title","offer_id":51256376656190,"sku":"DIENW9987","price":78.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/Socket-capsc_png_ab4acc16-2975-42d8-ba40-5dfc1fa11f3f.png?v=1781533260"},{"product_id":"black-dome-nut-cover","title":"Black Dome Nut Cover","description":"\u003cp data-start=\"220\" data-end=\"647\"\u003eThis black dome nut cover is designed to provide a clean, protective finish for fastenings used in structural, automotive, and construction applications. Manufactured for durability, it offers a reliable way to shield exposed nuts from impact, moisture, and general wear. Its tough material construction ensures long-lasting performance, helping maintain a neat and professional appearance across a wide range of installations.\u003c\/p\u003e\n\u003cp data-start=\"649\" data-end=\"1040\"\u003eThe domed design fully encloses the nut, reducing the risk of snagging while offering protection from corrosion and environmental exposure. This makes it suitable for indoor and outdoor use, particularly in settings where aesthetics and safety are equally important. Its internal profile is shaped to fit standard metric nuts securely, ensuring a stable and reliable connection once applied.\u003c\/p\u003e\n\u003cp data-start=\"1042\" data-end=\"1460\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eSold individually, this black dome nut cover is a practical choice for professionals and DIY users who need a robust finishing component that enhances both protection and appearance. Its dependable fit, durable construction, and compatibility with metric fasteners make it a trusted solution for machinery, framework assembly, automotive work, and general fastening tasks requiring a tidy, long-lasting protective cap\u003c\/p\u003e","brand":"Duchy Fasteners","offers":[{"title":"M6 (10mm)","offer_id":52720548938046,"sku":"DNCB06","price":0.07,"currency_code":"GBP","in_stock":true},{"title":"M8 (13mm)","offer_id":52720548905278,"sku":"DNCB08","price":0.1,"currency_code":"GBP","in_stock":true},{"title":"M10 (17mm)","offer_id":52720548872510,"sku":"DNCB10","price":0.13,"currency_code":"GBP","in_stock":true},{"title":"M12 (19mm)","offer_id":52720548839742,"sku":"DNCB12","price":0.17,"currency_code":"GBP","in_stock":true},{"title":"M16 (24mm)","offer_id":52720548806974,"sku":"DNCB16","price":0.32,"currency_code":"GBP","in_stock":true},{"title":"M20 (27mm)","offer_id":52720548774206,"sku":"DNCB20","price":0.62,"currency_code":"GBP","in_stock":true},{"title":"M24 (36mm)","offer_id":52720548741438,"sku":"DNCB24","price":2.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/files\/dnc-blk_png_1a410a03-2cf0-4b63-a572-d37d24835350.png?v=1765464793"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/3183\/5198\/collections\/nuts.jpg?v=1779451651","url":"https:\/\/duchyfasteners.co.uk\/collections\/nuts.oembed?page=4","provider":"DuchyFasteners","version":"1.0","type":"link"}