Proto J5318M Deep Hand Socket 18mm 12-point 1/2 Drive

Product Description

The PROTO J5318M is a deep hand socket designed for professional mechanics, maintenance technicians, and tradespeople who need extended reach on recessed or deeply set fasteners. Built from alloy steel with a chrome-plated finish, this socket measures 3.25 inches in overall length and accepts an 18 mm fastener. The 12-point internal geometry provides more engagement positions than a 6-point socket, making it useful in tight spaces where full-arc rotation is not possible. It is rated to ASME B107.110-2012 and SAE AS955, confirming compliance with recognized dimensional and performance standards for hand sockets.

This socket is suited for automotive repair, industrial maintenance, and mechanical assembly work where a standard-depth socket cannot seat fully on the fastener. The 1/2 inch square drive pairs it with common torque wrenches, ratchets, and extensions used across commercial shop and field service applications. The deep length is particularly useful when working with long bolt shanks, studs, or fasteners recessed into equipment housings.

Key Features

• Deep length at 3.25 inches overall for reaching recessed fasteners
• 12-point design allows more wrench positions in confined spaces
• Alloy steel construction for durability under torque loading
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.110-2012 and SAE AS955 standards
• 1/2 inch drive compatible with standard shop ratchets and torque wrenches

Compatibility

Designed as an OEM-style deep hand socket compatible with standard 1/2 inch drive ratchets, extensions, and torque wrenches used in automotive, industrial, and mechanical service applications.

Installation Notes

This socket is installed by qualified mechanics and maintenance technicians following standard hand-tool practices. Ensure the drive connection is fully seated before applying torque to avoid rounding the fastener or damaging the drive square. Inspect the socket for cracks or wear before each use, and do not use impact drivers unless the tool is rated for impact service. Work on de-energized or de-pressurized equipment before loosening fasteners on mechanical assemblies.