This product is a 16 mm impact deep socket with a 1/2 inch square drive, designed to be used with air, electric or cordless impact wrenches where extra reach is needed to access recessed or obstructed fasteners. Its primary use is removal and tightening of hex-headed bolts and nuts in automotive, plant maintenance and heavy equipment applications where high torque and impact loading are involved.

The socket is manufactured from chrome-molybdenum (Cr-Mo) alloy steel and is heat treated to give the toughness required for repeated impact use. The internal profile is a 6-point (hex) configuration to engage fastener flats securely and reduce the risk of rounding. The drive interface is a 1/2" square recess compatible with standard 1/2" impact tools and extensions. The external finish is a black phosphate/oxide coat typically applied to impact sockets to provide surface corrosion resistance and to reduce glare and slippage when handled.

Dimensions and drive interfaces are produced to common industry socket standards and comply with recognised DIN, ISO and BS dimensional and drive-specification practices for hand and impact sockets, ensuring interchangeability with other tools and accessories. As an impact-rated socket it is not chrome plated; the black finish and Cr-Mo construction prioritise durability and toughness rather than cosmetic appearance.

Typical applications include automotive and commercial vehicle repair, agricultural machinery maintenance, industrial plant assembly and breakdown, construction plant servicing and general workshop use. The deep length allows engagement of nuts on long studs, wheel nuts recessed behind dust caps, and fasteners located within housings or through bulkheads.

Key benefits of this socket are its ability to withstand impact loads without cracking, compatibility with standard 1/2" drive impact tools, a 6-point profile that gives a strong, secure grip on fastener heads and the corrosion-resistant black phosphate finish for longer service life in workshop environments. The 16 mm size is a common metric dimension for many vehicles and machinery makes.

Duchy Fasteners carries a comprehensive range of metric deep impact sockets in 1/4", 3/8" and 1/2" drives across popular sizes, available as single packed items and in sets; please contact us for specific pack sizes and availability. Part code DR12742.