This 6 mm hexagonal socket bit with a 1/2" square drive is a hand-tool socket bit designed to engage internal hex (Allen) fasteners where a 1/2" drive ratchet, torque wrench or T-handle is used. Its primary use is to transmit torque reliably to metric hex caps, set screws and socket-head cap screws during assembly, maintenance and repair tasks where greater leverage is required than a conventional screwdriver or small bit driver can provide.

The bit is manufactured from chrome vanadium (Cr-V) tool steel and heat-treated to provide the necessary strength and wear resistance for hand-tool use. The surface has a chrome-plated/satin finish to resist corrosion and to ease cleaning in workshop environments. The product conforms to commonly used DIN, ISO and BS dimensional and fitment standards for 1/2" square drive sockets and hexagon internal fittings, ensuring interchangeability with standard 1/2" drive tools and accessories. The head type is an internal hexagon (hex) with a 6 mm across-flats dimension; the drive type is a 1/2" (12.7 mm) square male socket drive. There is no thread on the bit; it is a captive drive accessory for power from hand tools only.

Typical applications include automotive repair, industrial maintenance, plant and machinery servicing, agricultural machinery work and light engineering. It is particularly useful where higher torque is required to loosen or tighten hex socket screws in assemblies, or where access and leverage demand the use of a 1/2" ratchet or breaker bar. The bit is intended for hand-tool use; it should not be used in impact drivers unless specifically rated for impact service.

Key benefits include good corrosion resistance from the chrome finish, robust strength and wear resistance from the heat-treated Cr-V construction, and broad compatibility with 1/2" drive ratchets, torque wrenches and extension bars. The 6 mm size provides a precise fit to minimise cam-out and fastener damage.

Duchy Fasteners stocks this hexagonal socket bit in single pieces and in common metric sets, with various lengths and pack quantities available to suit trade and workshop requirements. If you need a deeper reach or impact-rated variants, contact Duchy Fasteners for options.