This 13mm impact socket is a purpose-made power-tool accessory intended for the rapid removal and tightening of 13mm hex fasteners. Designed for use with 1/2" (12.7mm) square drive impact wrenches and impact-rated torque tools, the socket features a 6-point internal profile to give secure engagement with hex heads and reduce rounding under high torque loads.

The socket is manufactured from chrome-molybdenum (Cr-Mo) alloy steel, heat treated and tempered to provide the toughness required for impact duty. The external surface is finished with a black phosphate / oxide coating to improve corrosion resistance and to avoid the brittle chrome plating used on hand sockets. The drive end includes a 1/2" square connector with a detent hole for locking pins or ball detents on impact extensions and rattle guns; there are no threaded connections on the drive. The tool is made to dimensional and performance guidelines consistent with recognised DIN and ISO recommendations for impact sockets and manufactured to meet relevant BS requirements for industrial hand tools where applicable.

Typical applications include automotive and commercial vehicle maintenance, agricultural and plant machinery servicing, construction and building services, and general workshop use where powered impact tools are employed. The 6-point profile makes it particularly suitable for high-torque removal of bolts and nuts without rounding, while the Cr‑Mo construction gives improved shock resistance compared with standard chrome-vanadium hand sockets.

Key benefits include enhanced impact toughness and fatigue resistance from the Cr‑Mo alloy, improved corrosion resistance from the black phosphate finish, and direct compatibility with 1/2" drive impact wrenches and accessories. The socket’s internal profile and finish help protect fastener heads during heavy use and ensure reliable transfer of torque. Duchy Fasteners stocks this 13mm impact socket in a range of pack sizes from single units to bulk packs suitable for workshops and fleet maintenance; complementary sizes and drive variants are also available to complete a professional impact socket set.