Proto J72142 Impact Socket Set 5 Pc 3/8 Inch Drive

Product Description

The PROTO J72142 is a 5-piece impact-rated standard socket set built for 3/8 inch drive impact and hand tools. The set covers sizes from 3/8 inch through 5/8 inch and features a 6-point contact geometry that reduces fastener rounding under high-torque conditions. All five sockets are organized on an included clip rail for toolbox storage and quick access. This set is well suited for HVAC technicians, plumbers, electricians, and general mechanical trades who work with impact drivers and need a compact inch-size socket range on a 3/8 inch drive.

The J72142 fits standard residential and light commercial service applications where a 3/8 inch drive impact set covers the most common fastener sizes. Typical use includes equipment panel removal, component mounting hardware, and mechanical assembly work across HVAC units, electrical panels, and plumbing fixture installations. The clip rail storage makes the set portable and keeps individual sockets accounted for on a job site or in a service van.

Key Features

• 5-piece set covers 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, and 5/8 inch socket sizes
• 3/8 inch drive compatible with standard impact and ratchet drivers
• 6-point socket design reduces fastener rounding under impact torque
• Inch measurement system for standard US fasteners
• Clip rail container keeps sockets organized and easy to inventory

Compatibility

Designed for use with 3/8 inch drive impact tools and ratchets that accept standard square-drive sockets in inch sizes.

Installation Notes

Installation and fastener work with this socket set should follow applicable trade codes and jobsite safety practices. Ensure the impact tool is powered down or the air supply is disconnected before changing sockets. Verify the socket is fully seated on the drive before applying torque. Use impact-rated sockets only with impact drivers to prevent socket fracture.