Proto J72252 Impact Hex Bit Socket Set 3/8 in Drive 5 Pc

Product Description

The PROTO J72252 is a 5-piece metric impact hex bit socket set designed for 3/8 inch drive tools. It covers hex sizes from 4 mm through 10 mm, making it a compact but versatile set for fastener work across a range of applications. The sockets mount on a rail for organized storage and quick access on the job. Built as an impact-rated set, these sockets are suited for use with impact wrenches and drivers where standard chrome sockets would be undersized for the load. Technicians in HVAC, electrical, plumbing, and general mechanical service will find this set covers the most common metric hex fastener sizes encountered in the field.

This set is appropriate for residential and commercial service work wherever 3/8 inch drive impact tools are standard. Typical applications include equipment panel fasteners, motor mounting hardware, valve assemblies, and electrical enclosure hardware. The 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm sizes cover the metric hex fastener range most frequently found on modern HVAC units, pumps, and related mechanical equipment. The rail container keeps the set intact and prevents loss of individual sockets between service calls.

Key Features

• Impact-rated hex bit socket construction for use with 3/8 inch drive impact wrenches and drivers
• 5-piece metric set covering 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm hex sizes
• Rail container for organized storage and fast socket selection
• Metric measurement type suited for modern equipment with metric fasteners
• Compact set footprint covers the most common metric hex sizes in a single purchase

Compatibility

Designed for use with 3/8 inch drive impact wrenches and drivers accepting standard impact hex bit sockets in metric sizes 4 mm through 10 mm.

Installation Notes

Always power down or de-energize equipment before using impact tools on fasteners near electrical components. Confirm the drive size of your impact tool matches 3/8 inch before use. Impact-rated sockets should not be substituted with standard chrome sockets on impact drivers, as non-impact sockets may fracture under repeated shock loading. Inspect each socket for cracks or wear before use.