Proto J47055MN 5mm 12-point 1/4 Drive Hand Socket

Product Description

The PROTO J47055MN is a 5 mm, 12-point hand socket designed for 1/4 inch drive ratchets and extensions. Chrome-plated steel construction provides corrosion resistance and durability in demanding shop and field environments. At a standard overall length of 1-17/64 inches, this socket fits into tight access points where bulk is a concern. It meets AS4984A, ASME B107.110-2012, and SAE AS955 standards, making it a code-compliant choice for professional technicians who require documented tool certification. Weighing only 0.02 pounds, it adds minimal weight to a socket set. Suitable for automotive, HVAC mechanical fastener work, and general trade applications requiring precise metric sizing.

This socket is intended for use with 1/4 inch drive hand tools in residential, commercial, and light industrial service environments. The 12-point design engages fasteners at multiple angles, reducing the need to reposition the drive in confined spaces. It is well suited for technicians working on equipment with metric fasteners in tight locations, including HVAC equipment panels, electrical enclosures, and mechanical assemblies where a 5 mm socket is the required fit.

Key Features

• 5 mm socket size for metric fastener applications
• 12-point configuration allows engagement at 30-degree increments
• 1/4 inch drive compatible with standard ratchets and extensions
• Chrome-plated steel finish resists corrosion and eases cleaning
• Standard length profile at 1-17/64 inches overall
• Meets AS4984A, ASME B107.110-2012, and SAE AS955 standards with lifetime warranty

Compatibility

Designed for use with 1/4 inch drive hand tool systems including ratchets, extensions, and torque wrenches that accept standard square drive sockets.

Installation Notes

This socket is installed and removed by hand tool technicians across automotive, HVAC, plumbing, and electrical trades. Ensure the drive is fully seated before applying torque to avoid rounding the fastener or damaging the socket. Do not use hand sockets with impact drivers unless the socket is impact-rated. Inspect the socket for cracks or wear before each use.