This is a 25 mm impact socket with a 1" (25.4 mm) square drive, designed for use with 1" drive impact wrenches and torque multipliers to apply and remove 25 mm hex fasteners. It is intended primarily for heavy-duty workshop, commercial vehicle and industrial maintenance work where high torque and repeated shock loading are required.

The socket is manufactured from chrome‑molybdenum (Cr‑Mo) alloy steel and is heat treated and tempered to give enhanced shock resistance compared with ordinary chrome‑vanadium hand sockets. The external finish is a protective black phosphate/oxidised coating to improve corrosion resistance and reduce surface chipping under impact. The socket conforms to recognised DIN/ISO dimensional practices for impact sockets and is compatible with common British Standard tooling interfaces used in professional workshops.

Head geometry is a six‑point (6pt) hex profile to maximise contact with fastener flats and reduce the risk of rounding nuts and bolts under high torque. Drive interface is a 1" square recess to accept 1" square drive anvils and extension accessories; the socket is provided with a through‑hole and peripheral groove to allow use with retaining pins or detent balls for secure attachment to drive tools where required.

Typical applications include heavy commercial vehicle wheel and axle work, plant and machinery maintenance, construction equipment servicing, agricultural machinery, and heavy fabrication where large fasteners must be tightened or undone with impact tools. Industries that commonly use this socket are haulage and transport, civil engineering, mining, utilities and heavy manufacturing.

Key benefits of this 25 mm 1" drive impact socket are its superior toughness under shock loading from the Cr‑Mo material and heat treatment, improved corrosion resistance from the black phosphate finish, and secure fastening to 1" drive impact tools via the retention hole and groove. The 6‑point head gives better load distribution on fastener flats for reduced damage and more reliable torque transfer.

Duchy Fasteners holds a broad stock range of Draper impact sockets including metric sizes from small to extra large and supply options in singles or in sets and packs. If you need alternative sizes or multi‑piece kits, please contact our sales team.