Proto J78412MP Impact Socket 3/8 in Drive 12mm 6-point

Product Description

The PROTO J78412MP is a 6-point impact socket designed for use with 3/8 inch drive impact wrenches and rattle guns in professional trade and industrial applications. Built from alloy steel, this 12mm hex-drive socket delivers the toughness required for high-torque fastener work. The overall length of 2-19/32 inches makes it a practical fit in tight quarters without sacrificing reach. It meets ASME B107.2 standards, confirming dimensional accuracy and performance consistency. Mechanics, pipefitters, electricians, and HVAC technicians commonly reach for this socket during equipment service and installation work where impact-rated tooling is required.

This socket is suited for residential and commercial service applications wherever 12mm fasteners are encountered. It is intended for use with 3/8 inch drive pneumatic or cordless impact tools. The universal style designation makes it adaptable across a wide range of service tasks. Typical install scenarios include mechanical equipment assembly, panel work, motor mounting, and structural fastener service in trade and light industrial environments.

Key Features

• 3/8 inch drive size compatible with standard impact tools
• 12mm 6-point hex drive for secure fastener engagement and reduced rounding
• Alloy steel construction rated for impact use
• Overall length of 2-19/32 inches for versatile reach
• Meets ASME B107.2 dimensional and performance specification

Compatibility

Designed as an OEM-style replacement and standard service socket for use with 3/8 inch drive impact wrenches requiring a 12mm 6-point hex socket.

Installation Notes

Install and remove using a 3/8 inch drive impact wrench or breaker bar. Always verify socket seating on the fastener before applying torque to avoid slippage or fastener damage. Do not use impact sockets on non-impact hand ratchets beyond their rated capacity. Follow applicable workplace safety guidelines when operating pneumatic or cordless impact tools.