Proto J5431M 31mm 12-point 1/2 Drive Hand Socket

Product Description

The PROTO J5431M is a 31 mm, 12-point hand socket built for professional mechanical and maintenance work. It features a 1/2 inch drive and is constructed from alloy steel with a chrome-plated finish that resists corrosion and cleans easily in shop conditions. The socket measures 1-25/32 inches in overall length, placing it in the standard-length category. It meets ASME B107.5M standards, making it suitable for demanding trade applications where dimensional accuracy and material strength are required. Licensed mechanics, industrial maintenance technicians, and heavy equipment service professionals are the primary installers of this type of socket.

This socket is suited for fastener work in automotive, fleet maintenance, industrial equipment, and heavy-duty mechanical applications where a 31 mm fastener head is encountered. The 12-point design increases the number of engagement positions, which is useful in tight access situations where ratchet swing angle is limited. The 1/2 inch drive pairs with standard 1/2 inch drive ratchets, breaker bars, torque wrenches, and extensions commonly found in professional tool sets.

Key Features

• 31 mm socket size for metric fastener applications
• 12-point design for more engagement positions in confined spaces
• 1/2 inch drive compatible with standard ratchets, torque wrenches, and breaker bars
• Alloy steel construction for strength and durability under high torque
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.5M standards for dimensional and performance compliance
• Standard length at 1-25/32 inches overall for general-purpose use

Compatibility

Designed as a standard 1/2 inch drive metric hand socket compatible with 1/2 inch drive ratchets, torque wrenches, breaker bars, and extensions from major tool manufacturers.

Installation Notes

This socket is intended for use by qualified mechanics and maintenance technicians working on mechanical fasteners. Always confirm the fastener size before applying torque to avoid rounding. Ensure the socket is fully seated on the fastener and drive tool before use. Inspect the socket for cracks or wear before each use and remove it from service if damage is found.