Proto J5542M 42mm 12-point 3/4 Drive Hand Socket

Product Description

The PROTO J5542M is a 42 mm, 12-point hand socket designed for heavy-duty fastener work on 3/4 inch drive ratchets and breaker bars. Constructed from alloy steel with a chrome-plated finish, this standard-length socket measures 2-23/32 inches overall. The 12-point geometry allows engagement at multiple angles, useful in tight access situations where swing arc is limited. It meets ASME B107.110-2012 and SAE AS955 standards, confirming dimensional and performance compliance for professional use. Mechanics, maintenance technicians, and industrial service crews will find this socket suitable for large-fastener applications in both shop and field environments.

This socket is built for use on large fasteners commonly found in heavy equipment, truck and fleet service, industrial machinery, and structural assemblies. The 42 mm size targets metric fastener applications at the larger end of the hand-tool range. Its standard length profile fits most 3/4 drive tool setups without requiring an extension for direct access applications. This socket is not tether capable and is intended for conventional hand-tool use in controlled work environments.

Key Features

• 42 mm socket size for large metric fastener applications
• 12-point design allows engagement at 30-degree increments for improved access in confined spaces
• 3/4 inch drive compatibility suits heavy-duty ratchets and breaker bars
• Alloy steel construction provides strength for high-torque applications
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.110-2012 and SAE AS955 standards

Compatibility

Designed for use with standard 3/4 inch drive hand tools including ratchets, breaker bars, and torque wrenches. No specific model compatibility data was provided by the manufacturer for this part.

Installation Notes

Installation and removal of fasteners using this socket should be performed by qualified mechanics or maintenance technicians familiar with proper torque practices for the application. Ensure the drive tool and socket are fully seated before applying force to prevent rounding of the fastener or socket damage. Inspect the socket for cracks or wear before use, particularly in high-cycle or high-torque service. This socket is not tether capable and should not be used in overhead or elevated work zones where drop hazards exist.