This product is a 33 mm impact deep socket with a 3/4 inch square drive, designed to remove and install hex-headed nuts and bolts in recessed or hard-to-reach positions where standard shallow sockets cannot engage the fastener. The deep profile gives additional reach for long studded fixings, while the 3/4in drive makes it suitable for heavy-duty torque tools and large commercial applications.

The socket is manufactured from chromium-molybdenum (Cr-Mo / 42CrMo4) steel and is heat-treated to provide the toughness required for impact use. The exterior is finished with a black phosphate/black oxide coating to reduce corrosion and help resist flaking or chipping under repeated impact. The tool features a 6-point (hex) internal head for positive engagement with fastener flats, reducing rounding, and a standard 3/4in (19.05 mm) square drive recess to fit industry-standard impact wrenches and breaker bars. Although sockets are not threaded components, the drive aperture accepts standard retaining pins or rings used with 3/4in tools.

The socket is produced to the recognised dimensional and performance criteria common to DIN, ISO and BS socket specifications for impact tools, ensuring interchangeability with other 3/4in drive accessories and compliance with workshop safety expectations. Typical applications include commercial vehicle and plant maintenance, agricultural machinery servicing, construction plant repair, and heavy engineering assembly where high torque and extended reach are required. It is commonly used with pneumatic or electric impact guns and torque tools.

Key benefits include excellent impact strength from the Cr-Mo alloy and heat treatment, improved corrosion resistance from the black phosphate finish, and secure fastener engagement via the 6-point geometry. The 3/4in drive compatibility ensures the socket works with a wide range of industrial drive tools and extensions.

Duchy Fasteners stocks this 33 mm impact deep socket individually and in bulk pack options and carries a wide metric range of impact sockets compatible with 3/4in drives; please contact us for available sizes and pack quantities.