Proto J07542MT Impact Socket 3/4 in Drive 42mm

Product Description

The PROTO J07542MT is a 12-point impact socket designed for heavy-duty fastener removal and installation in professional trade applications. Built from alloy steel, this socket accepts a 3/4 inch drive and fits a 42mm fastener. The overall length is 2-9/16 inches, making it suited for standard-depth access in most service environments. It is intended for use with pneumatic, hydraulic, or electric impact wrenches and is a go-to tool for automotive, heavy equipment, industrial maintenance, and mechanical contractors who need reliable torque transfer on large-format fasteners.

The J07542MT is sized for large-diameter fastener applications common in heavy truck service, agricultural equipment, construction machinery, and industrial assembly. The 12-point geometry allows engagement from multiple positions, which is useful in confined or awkward access points. Mechanics, millwrights, and fleet technicians working on axle hardware, suspension components, and structural fasteners will find this socket a practical fit for demanding jobsite conditions.

Key Features

• 3/4 inch drive fits standard impact wrenches and drive tools in that drive class
• 42mm socket size for large-format metric fasteners
• 12-point design allows multiple engagement positions on hex fasteners
• Alloy steel construction provides strength and impact resistance under high-torque loads
• 2-9/16 inch overall length suits standard-depth fastener access

Compatibility

Designed as an OEM-style replacement or service addition for 3/4 inch drive impact tool sets used on 42mm metric fasteners in heavy-duty mechanical applications.

Installation Notes

A licensed or qualified mechanic should verify fastener torque specifications using the applicable service manual before use. Always power down or depressurize the impact wrench before seating or removing the socket. Inspect the socket for cracks or deformation before each use and do not use hand-socket extensions with impact tools. Follow applicable workplace safety codes when operating impact tools in industrial environments.