Proto J78411MP Impact Socket 3/8 in Drive 11mm 6-pt

Product Description

The PROTO J78411MP is a 6-point impact socket designed for high-torque fastening applications in the field and shop. Built from alloy steel, it accepts a 3/8 inch drive and fits 11mm hex fasteners. The 6-point contact geometry reduces the risk of rounding fastener heads under load. With an overall length of 2.5 inches, it fits in tight spaces while maintaining solid fastener engagement. This socket meets ASME B107.2 standards, making it a reliable choice for automotive, mechanical, and industrial service work performed by professional technicians and trade mechanics.

This socket is suited for residential and commercial mechanical service environments where impact-rated hand tools are required. Typical applications include fastening and removal of 11mm hex fasteners on machinery, automotive components, and mechanical assemblies. The 3/8 inch drive size makes it compatible with standard impact wrenches and ratchets used in fleet maintenance, HVAC equipment service, and general mechanical repair. Its alloy steel construction handles the repeated shock loading that impact tools generate during everyday professional use.

Key Features

• 3/8 inch drive fits standard impact wrenches and ratchets
• 11mm 6-point hex socket reduces fastener rounding under high torque
• Alloy steel construction rated for impact tool use
• 2.5 inch overall length for access in confined work areas
• Meets ASME B107.2 specification for socket standards

Compatibility

Designed as an OEM-style impact socket for use with 3/8 inch drive impact wrenches and ratchets accepting 11mm hex fasteners across automotive, mechanical, and industrial service applications.

Installation Notes

This socket is installed and used by automotive technicians, mechanics, and trade professionals working with impact-rated drive tools. Always verify the socket is fully seated on the drive square and fastener before applying torque. Inspect the socket for cracks or deformation before each use and remove from service if damage is found. Do not use impact sockets with manual-only ratchets rated below the torque output of the impact tool being used.