Proto J5212N 3/8 in Drive 12-point Hand Socket

Product Description

The PROTO J5212N is a 3/8 inch drive, 12-point intermediate hand socket designed for professional hand-tool use in mechanical, industrial, and trade service applications. Built from polished steel, it features a standard-length profile measuring 1-15/64 inches overall. The 12-point geometry engages fasteners at more contact positions than a 6-point design, giving technicians flexibility when working in confined spaces or with worn fastener heads. This socket meets ASME B107.21 standards and carries a lifetime warranty, reflecting its suitability for daily professional use in HVAC, plumbing, electrical, and general mechanical service work.

This socket is suited for light-duty to moderate fastener work across residential and commercial service environments. Its standard length makes it a go-to choice for accessible fasteners where a deep socket is unnecessary. Electricians, HVAC technicians, plumbers, and general maintenance professionals will find it fits into standard 3/8 inch drive ratchets, extensions, and speed handles. The polished finish resists surface corrosion during routine shop and field use.

Key Features

• 3/8 inch drive size compatible with standard 3/8 inch drive tool sets
• 12-point design provides more engagement positions for working in tight spaces
• Polished steel construction meets ASME B107.21 standards
• Standard length profile at 1-15/64 inches overall
• Lifetime warranty coverage
• Not tether capable — intended for conventional hand-tool use

Compatibility

Designed as a standard OEM-style 3/8 inch drive hand socket for use with 3/8 inch drive ratchets, extensions, and speed handles in professional hand-tool applications.

Installation Notes

Install and remove with standard 3/8 inch drive hand tools only — do not use with impact drivers, as this is a hand socket not rated for impact use. Ensure the drive and socket are fully seated before applying torque to avoid fastener or socket damage. Inspect the socket for cracks or wear before each use, and remove from service if damage is found.