Socket bit JCB 3/4" deep 40 mm 12-point

Deep impact socket JCB 3/4" deep 40 mm 12-point is a heavy-duty socket designed for high-torque fastening and loosening with impact wrenches and pneumatic or electric impact tools. The 3/4" drive and 40 mm opening provide compatibility with common industrial and automotive fasteners, while the 12-point internal profile facilitates engagement with hexagonal nuts in confined or recessed locations. The deep profile enables reach to long bolts and studs, and the impact-rated construction is intended to withstand repeated use under elevated torque conditions.

Advantages

This JCB impact socket combines a deep-wall design with a 12-point geometry to improve access to recessed fasteners and allow multiple engagement positions on the same nut or bolt. The 3/4" drive delivers the mechanical leverage required for heavy-duty applications, and the impact-rated build reduces deformation and extends service life when used with impact tools. The 40 mm size is commonly used in automotive, agricultural and industrial equipment maintenance.

Suitable for

• Automotive wheel and suspension fastening where large nuts and bolts are present
• Agricultural machinery maintenance and repair
• Industrial assembly and heavy equipment service requiring high torque
• Accessing recessed nuts, long studs, and fasteners on machinery

Key specifications

• Drive size: 3/4"
• Socket depth: deep profile suitable for recessed fasteners and long bolts
• Opening size: 40 mm
• Point configuration: 12-point internal profile for improved engagement
• Tool compatibility: impact wrenches, pneumatic and electric impact tools
• Intended use: impact-rated for repeated high-torque operations

How to use

Select the 40 mm socket and attach it securely to a compatible 3/4" drive impact wrench or breaker bar. Position the socket straight onto the fastener to ensure full engagement of the 12-point profile, then apply torque using the impact tool according to the tool and fastener specifications. For removal of long studs or recessed nuts, use the deep profile to reach the fastener without compromising tool alignment. Inspect the socket for cracks or wear before use and replace it if damage is present.

Usage recommendations

Use only with impact-rated accessories and follow the torque limits and safety instructions of the impact tool manufacturer. Wear appropriate protective equipment and avoid side-loading the socket to prevent premature wear or breakage. Store the socket in a dry, organized tool storage to maintain condition and readiness for heavy-duty tasks.