The 17mm Combination Spanner is a hand tool with an open-ended jaw at one end and a boxed (ring) end at the other, specifically sized for tightening and loosening 17 mm metric nuts and bolts. Its primary use is to provide a reliable manual means of applying torque in maintenance, assembly and repair tasks where a single spanner must work on both exposed and recessed fasteners.

This spanner is manufactured from chrome vanadium (Cr-V) steel and is heat treated and tempered to provide the toughness and hardness required for repeated workshop use. The tool is supplied with a polished chrome-plated finish to give corrosion resistance and easy cleaning. The open end is set at a 15° angle to improve access in confined spaces, while the ring end is a 12-point box profile to allow engagement on flats and improved turning in tight swing arcs. Dimensions conform to the common DIN metric profile for combination spanners (DIN 3113) and are compatible with equivalent ISO/BS metric dimensional standards.

Typical applications for a 17mm combination spanner include automotive repair and servicing, agricultural machinery maintenance, mechanical and plant engineering, fabrication and assembly, building services and general industrial maintenance. The combination of an angled open jaw and a 12-point ring end makes it suitable for working on both exposed hex heads and bolts recessed in frames or machinery housings.

Key benefits of this 17mm spanner include good corrosion resistance from the chrome finish, reliable strength from the Cr-V material and heat treatment, and broad compatibility with metric fasteners. The 12-point box end reduces the risk of rounding fastener corners compared with worn or undersized tools, and the 15° offset open end allows better access without removing adjacent components.

Duchy Fasteners stocks this 17mm combination spanner as a single item and within mixed metric sets. Our hand tool range covers common sizes from small 6 mm through to larger 32 mm spanners, available in single-piece packs and assorted sets to suit workshop and on-site requirements.