Proto J10062 Impact Socket 1 in Drive 3-7/8 in 6-point

Product Description

The PROTO J10062 is a heavy-duty impact socket built for high-torque applications in industrial maintenance, fleet service, and construction. It accepts a 1 inch square drive and fits a 3-7/8 inch hex fastener with a 6-point contact pattern. At 5 inches overall length, it provides adequate clearance for standard impact wrench heads. The 6-point design concentrates force on the flats of the fastener rather than the corners, reducing fastener rounding under heavy impact loads. This socket is designed for use with pneumatic or hydraulic impact wrenches by professional mechanics, millwrights, and heavy equipment technicians.

This socket fits into maintenance scenarios involving large-diameter fasteners common on heavy equipment, agricultural machinery, truck axles, and industrial machinery. The 1 inch drive size places it in the heavy-duty tier, typically paired with a full-size air impact wrench or a hydraulic torque tool. It is suited for shops, field service trucks, and plant maintenance programs where 3-7/8 inch hex fasteners are regularly serviced.

Key Features

• 1 inch square drive for use with heavy-duty impact wrenches
• 3-7/8 inch socket size accommodates large hex fasteners
• 6-point hex drive pattern reduces fastener rounding under impact loads
• 5 inch overall length provides clearance for standard drive tool housings
• Impact-rated construction for repeated high-torque use

Compatibility

Designed as an OEM-style replacement and standard fit for 1 inch drive impact wrenches and torque multipliers used in heavy-duty industrial and fleet service applications.

Installation Notes

Installation and removal should be performed by a qualified mechanic or millwright familiar with impact tooling. Ensure the impact wrench or torque tool is rated for the drive size before use. Inspect the socket for cracks or deformation before each use and remove from service if damage is found. Never use impact sockets with standard hand-drive ratchets, as impact sockets are designed for the shock loads produced by impact tools.