Proto J5212B 3/8 Inch Drive 12-point Hand Socket

Product Description

The PROTO J5212B is a 3/8 inch drive, 12-point hand socket built for professional fastener work in demanding trade environments. Machined from alloy steel with a black oxide finish, this socket delivers corrosion resistance and durability across repeated use cycles. The 12-point design engages fastener heads at multiple contact points, reducing the chance of rounding under torque. At 1-3/32 inches overall length, it fits standard 3/8 inch drive ratchets and extensions. Weighing 0.05 pounds, it is light enough for extended use without adding bulk to a tool kit. This socket is manufactured to ASME B107.1 standards and carries a limited lifetime warranty.

This socket is suited for mechanical, HVAC, plumbing, and electrical trade work where 3/8 inch fasteners are common. It pairs with any standard 3/8 inch drive ratchet, breaker bar, or torque wrench. The 12-point configuration makes it practical for work in confined spaces where full ratchet swing is limited. Professionals in automotive, equipment service, and building mechanical systems will find it useful for both routine maintenance and installation tasks.

Key Features

• 3/8 inch drive size compatible with standard ratchets and extensions
• 12-point socket design for multi-position fastener engagement
• Alloy steel construction for strength and long service life
• Black oxide finish for corrosion resistance
• 1-3/32 inch overall length for compact fitment
• Meets ASME B107.1 standards with a limited lifetime warranty

Compatibility

Designed for use with standard 3/8 inch drive ratchets, extensions, and torque wrenches in hand tool applications.

Installation Notes

This socket is installed by hand tool professionals across mechanical trades. Ensure the socket is fully seated on the fastener head before applying torque to avoid rounding. Do not use hand sockets with impact drivers or air tools unless the socket is impact-rated. Inspect for wear or cracking before each use session.