This is an 11/16" AF 12‑point Hi‑Torq socket designed for use with 3/8" square‑drive hand tools. Its primary use is to apply torque to imperial 11/16" fasteners where space is limited or finer indexing is required; the 12‑point profile allows easier engagement on hex heads and studs with smaller swing angles than a 6‑point socket.

The socket is manufactured from chrome‑vanadium (Cr‑V) alloy steel, heat treated and tempered for enhanced strength and wear resistance, with a typical hardness in the region of 48–52 HRC. The external surface is chrome plated for corrosion resistance and to simplify cleaning after use. The product is produced to industry socket tool standards and conforms to relevant DIN, ISO and BS requirements for hand sockets and square drives, ensuring dimensional compatibility and safe use with 3/8" drive ratchets, torque wrenches and extensions.

Head and drive details: the head is a 12‑point (double hex) design sized 11/16" across flats, giving multiple engagement positions and reduced fastener rounding under load. The drive is a 3/8" square recess to accept standard 3/8" ratchet handles, breaker bars and extensions. Thread type is not applicable to the socket body, but the internal drive recess is compatible with standard 3/8" square drive retaining pins and clips where required.

Typical applications include automotive maintenance and repair, commercial vehicle workshops, agricultural machinery servicing, plant and machinery maintenance and general industrial assembly. The Hi‑Torq profile and robust Cr‑V construction make this socket suitable for repeated workshop use where higher torque transfer and reduced deformation of fastener corners are important.

Key benefits include good corrosion resistance from the chrome finish, strength and durability from heat treatment, and broad compatibility with standard 3/8" drive toolsets and accessories. The 12‑point geometry offers faster positioning on fasteners in confined spaces while maintaining adequate torque capacity for most workshop tasks.

Duchy Fasteners stocks this Draper Tools Group D item (DR13219) individually and as part of 3/8" drive socket sets, with sizes across the common imperial range and available in single‑piece packs and multi‑piece kits.