Proto J7218HF Impact Socket 3/8 in Drive 9/16 in 6-point

Product Description

The PROTO J7218HF is a 6-point impact socket designed for heavy-duty fastening and removal tasks where a standard socket would fail. Built from alloy steel with a magnetic design, it accepts a 3/8 inch drive and fits 9/16 inch hex fasteners. The overall length is 1-3/32 inches, making it compact enough for tight-clearance work. The 6-point contact geometry distributes torque evenly across the fastener flats, reducing the risk of rounding. This socket is suited for mechanics, HVAC technicians, electricians, and other trade professionals who rely on impact drivers and impact wrenches daily.

This socket fits standard 3/8 inch drive impact wrenches and impact drivers. Its 9/16 inch size is a common fastener dimension across HVAC equipment, electrical panels, plumbing fixtures, and general mechanical assemblies. The magnetic retention feature helps hold fasteners in place during install and removal, especially useful when working overhead or in confined spaces where dropped hardware is a concern.

Key Features

• 3/8 inch drive fits standard impact wrenches and ratchets
• 9/16 inch 6-point socket opening for secure fastener engagement
• Alloy steel construction rated for impact tool use
• Magnetic design retains fasteners during positioning
• Compact 1-3/32 inch overall length for tight-clearance applications
• Lifetime warranty from PROTO

Compatibility

Designed for use with 3/8 inch drive impact wrenches, impact drivers, and ratchets. Fits 9/16 inch hex fasteners across a wide range of residential and commercial trade applications.

Installation Notes

Always match the socket drive size to the output drive of the impact tool before use. Inspect the socket for cracks or deformation before each use — do not use chrome hand-tool sockets with impact drivers. Power down or de-energize any equipment before fastening or loosening hardware on live systems. Use appropriate eye protection when operating impact tools.