Proto J7218M Impact Socket 3/8 in Drive 18mm 6-point

Product Description

The PROTO J7218M is a 6-point impact socket designed for use with 3/8 inch drive impact wrenches and ratchets. It fits an 18mm fastener and measures 1-3/32 inches in overall length, making it a compact option for tight-access fastener work. The hex drive style ensures positive engagement under high-torque conditions typical of pneumatic and electric impact tools. Built for trade professionals in mechanical, industrial, and maintenance applications, this socket is suited for technicians who demand reliable fastener engagement without rounding or slippage.

This socket is used across a wide range of professional applications including HVAC equipment assembly, plumbing fixture installation, and general mechanical maintenance where 18mm fasteners are common. The 3/8 inch drive size positions it as a mid-range tool suitable for both bench work and on-site service calls. The 6-point design reduces the risk of fastener damage compared to 12-point sockets, making it a preferred choice when working with worn or tight hardware.

Key Features

• 3/8 inch drive fits standard 3/8 inch impact wrenches and ratchets
• 18mm socket size for metric fastener applications
• 6-point contact geometry for secure grip and reduced fastener rounding
• Hex drive style for positive torque transfer under impact loads
• Compact 1-3/32 inch overall length for use in confined spaces

Compatibility

Designed as a standard 3/8 inch drive impact socket compatible with 3/8 inch drive impact wrenches, ratchets, and extension bars from any manufacturer following standard drive sizing.

Installation Notes

Install and remove using a 3/8 inch drive impact wrench, air ratchet, or hand ratchet. Ensure the socket is fully seated on the fastener before applying torque to prevent slippage or fastener damage. Inspect the socket for cracks or wear before each use, particularly after high-cycle impact work. Always disconnect the air supply or power source from the impact tool before changing sockets.