Proto J7220M Impact Socket 3/8 in Drive 20mm 6-point

Product Description

The PROTO J7220M is a 6-point impact socket designed for use with 3/8 inch drive impact wrenches and rattle guns. It accepts a 20mm fastener and measures 1-3/32 inches overall length, making it a compact option for tight-clearance applications. The hex drive interface transfers torque cleanly between the impact tool and the fastener, reducing the risk of rounding. This socket is suited for automotive technicians, heavy equipment mechanics, and industrial maintenance trades who require a reliable impact-rated socket in the 20mm range.

The J7220M fits standard 3/8 inch drive impact wrenches used in automotive repair, fleet maintenance, and light industrial assembly. Its 20mm size is a common fastener specification found on suspension components, drivetrain hardware, and engine accessories. The 6-point geometry maximizes contact area on hex fasteners, which reduces fastener damage during high-torque impact use. This socket is appropriate for both shop and field service work where a compact, impact-rated 3/8 inch drive tool is required.

Key Features

• 3/8 inch drive fits standard impact wrenches and extension bars in that drive class
• 20mm socket size covers a widely used metric fastener specification
• 6-point hex profile maximizes contact on fastener flats, reducing rounding risk under impact torque
• 1-3/32 inch overall length suits confined installation spaces
• Impact-rated construction intended for use with pneumatic or cordless impact drivers

Compatibility

Designed as an OEM-style replacement impact socket compatible with standard 3/8 inch drive impact wrenches and hand ratchets used in automotive and industrial service applications.

Installation Notes

Impact sockets should only be used with impact-rated drive tools. Verify the socket is fully seated on the drive anvil and the retaining pin or ring is engaged before applying torque. Do not use impact sockets as substitutes for hand sockets on torque wrenches, as impact socket tolerances differ. Inspect the socket for cracks or deformation before each use and replace any damaged socket immediately.