This C‑clamp is a hand clamp with a 150 mm maximum opening and a 70 mm throat depth, designed to hold workpieces securely for clamping, gluing, drilling, tack welding and general workshop assembly. The 'C' shaped frame gives even pressure across the clamped area while the long screw allows precise adjustment and firm holding force for metalwork, woodworking and light fabrication tasks.

The frame is cast from EN‑GJL‑250 grey cast iron to provide a rigid, vibration‑damping body. The clamping screw is machined from EN8 (medium carbon) steel, heat‑treated for strength and finished with zinc plating to resist corrosion. The screw uses an ISO metric coarse thread, specified as M12 × 1.75, and operates with a welded steel T‑bar handle for manual drive. A hardened swivel pressure pad is fitted to the end of the screw to follow irregular surfaces and spread clamping load without damaging the workpiece. The frame is given a durable powder coat finish to reduce surface rust in everyday workshop conditions.

Manufactured to Draper Tools Group D specification and produced in facilities operating to recognised quality systems (ISO 9001), this clamp follows established BS/ISO hand‑tool practice for dimensions and function. The metric thread and common T‑bar drive make it fully compatible with other metric tooling and accessories in a UK workshop environment.

Typical applications include holding stock for sawing, routing and sanding in joinery, securing panels for tack welding or drilling in light fabrication, and clamping components during automotive repair and restoration. Trades and industries that commonly use this size include woodworking, metal fabrication, maintenance workshops, education and hobbyist makers. The 150 mm opening and 70 mm throat offer a versatile middle ground between small bench clamps and larger heavy‑duty C‑clamps.

Key benefits are the rigidity and dampening of the EN‑GJL‑250 frame, the strength and wear resistance of the heat‑treated EN8 screw, and corrosion protection from zinc plating and powder coat. The M12 metric thread and T‑bar drive ensure repeatable, controlled clamping force and easy compatibility with workshop practice. Duchy Fasteners stocks this C‑clamp in a range of sizes and pack quantities, from individual items to multi‑packs, to suit trade and DIY requirements.