Proto J5012M Deep Hand Socket 12mm 12-point 3/8 Drive

Product Description

The PROTO J5012M is a deep hand socket designed for use with a 3/8-inch drive ratchet or breaker bar. It fits a 12mm fastener and features a 12-point configuration, which allows engagement from multiple angles and is well-suited for work in confined spaces or on worn fastener heads. The chrome-plated finish provides corrosion resistance during regular shop or field use. This socket is sized for deeper fastener access where a standard-depth socket would bottom out before reaching the nut or bolt head. It is a commonly used tool in automotive, mechanical, and maintenance trades.

This deep socket is used wherever a 12mm fastener requires extra clearance or reach — such as recessed bolts, studs with extended thread exposure, or fasteners seated below a surface. It is appropriate for automotive service, equipment maintenance, and general mechanical work. The 12-point design accepts both hex and double-hex fasteners, adding flexibility in mixed-hardware environments.

Key Features

• 12mm socket size fits standard metric fasteners
• 12-point configuration allows multi-angle engagement
• Deep length provides reach on recessed or extended fasteners
• 3/8-inch drive compatible with standard ratchets and extensions
• Chrome-plated finish resists corrosion in shop environments

Compatibility

Designed as a standard 3/8-inch drive deep hand socket for use with any 3/8-inch drive ratchet, torque wrench, extension bar, or breaker bar compatible with that drive size.

Installation Notes

This socket is installed and removed by hand tool professionals including automotive technicians, maintenance mechanics, and general tradespeople. Ensure the drive connection is fully seated in the socket before applying torque to prevent rounding or slippage. Do not use impact drivers with sockets not rated for impact service. Inspect the socket for cracks or deformation before each use.