This is a 55 mm, 1" square drive, 6-point impact socket designed to be used with 1-inch square drive impact wrenches, torque multipliers and heavy-duty hand tools to remove and tighten hexagonal nuts and bolts. Its primary use is in high-torque applications where impact-rated fittings are required to withstand repeated shock loads from pneumatic or electric impact tools.

The socket is manufactured from chrome‑molybdenum (Cr‑Mo) alloy steel and is heat treated to provide high torsional strength and toughness that exceed typical chrome‑vanadium non‑impact sockets. The external finish is a matt black phosphate/oxide coating that reduces surface corrosion and prevents galling under harsh workshop conditions. The socket features a 6‑point (hex) head geometry to engage flats rather than corners, reducing the risk of fastener rounding under heavy torque. The drive type is a 1" (25.4 mm) square recess compatible with standard 1" square drive anvil fittings and includes the retaining pin/ball hole for positive attachment to impact tools.

Dimensions and tolerances are produced to recognised tooling standards; the product is supplied to industry dimensions and manufacturing practices consistent with DIN/ISO/BS socket standards for square‑drive impact sockets (refer to the Draper technical datasheet for the precise standard references and dimensional tables). Threaded features are not applicable to this socket type, but the drive hole is prepared for secure tool retention.

Typical applications include heavy vehicle and plant maintenance, construction and civil engineering, industrial assembly, rail and marine maintenance, and oil & gas and wind turbine service where large fasteners require impact removal. The 6‑point profile and Cr‑Mo material give superior load distribution and fatigue resistance for repetitive, high‑torque use.

Key benefits are improved corrosion resistance from the phosphate finish, increased torsional strength from Cr‑Mo heat treatment, and compatibility with standard 1" square drive impact tools and retaining systems. The 6‑point design helps protect fastener heads and provides reliable engagement under shock loading.

Duchy Fasteners stocks this Draper Tools Group D item (DR05126) in single units and trade packs; we carry a wide range of impact socket sizes and drive configurations to suit professional and industrial requirements. Please contact us for availability and pack-size options.