Proto J77412MP Impact Socket 3/8 in Drive 12mm 6-point

Product Description

The PROTO J77412MP is a 12mm, 6-point impact socket designed for use with 3/8 inch drive impact wrenches and rattle guns. Built from alloy steel, it measures 2 inches overall length and meets ASME B107.2 standards. The hex drive style and 6-point geometry deliver solid contact on fastener flats, reducing rounding under high-torque impact loads. This socket is suited for automotive, mechanical, and industrial fastening work where durability and dimensional accuracy are required. Weighing 0.24 pounds, it is compact enough for tight-access fastener locations on engine components, chassis hardware, and equipment assemblies.

This socket is intended for use in automotive repair, fleet maintenance, and general mechanical service environments. The 3/8 inch drive size covers a broad range of medium-torque applications including suspension components, accessory brackets, and drivetrain hardware. It is appropriate for both shop technicians and field service professionals working with impact drivers. The universal style designation indicates suitability across a variety of fastener applications where a 12mm hex head is present.

Key Features

• 3/8 inch drive fits standard impact wrenches and hand ratchets in the 3/8 inch drive class
• 12mm 6-point socket geometry maximizes contact area on fastener flats to reduce rounding
• Alloy steel construction provides strength and durability under repeated impact loads
• Meets ASME B107.2 specification for impact socket dimensional and performance requirements
• 2 inch overall length suits both open and moderately confined fastener locations
• Compact 0.24-pound weight reduces hand fatigue during extended use

Compatibility

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

Installation Notes

Installation is performed by licensed mechanics, automotive technicians, and general service professionals. Ensure the impact wrench or ratchet is powered down or air supply is disconnected before changing sockets. Confirm the socket is fully seated on the drive anvil and the retaining ring or pin is engaged before applying torque. Inspect the socket for cracks or deformation before each use and remove from service if damage is found.