Proto J10038M Impact Socket 1 in Drive 38mm 6-point

Product Description

The PROTO J10038M is a 1-inch drive, 38mm impact socket designed for heavy-duty fastener removal and installation in industrial, fleet, and construction applications. Built from alloy steel, it features a 6-point hex drive geometry that maximizes contact with fastener flats, reducing rounding under high-torque impact loads. At 2-1/16 inches overall length, it suits standard impact wrenches and torque multipliers used by mechanics, millwrights, and heavy equipment technicians. It meets ASME B107.33M dimensional and performance standards, ensuring consistent fitment and durability across professional tooling setups.

This socket is suited for use with 1-inch drive pneumatic, hydraulic, or electric impact wrenches in automotive, heavy truck, mining, and industrial maintenance environments. The 38mm size covers common large-fastener applications including wheel hubs, suspension components, and structural bolting. It is appropriate for both shop and field use where metric heavy-hex fasteners are encountered regularly.

Key Features

• 1-inch drive size for compatibility with full-size impact wrenches and torque multipliers
• 38mm 6-point hex drive minimizes fastener rounding under impact torque
• Alloy steel construction for impact-rated strength and durability
• 2-1/16 inch overall length fits standard deep-reach and inline applications
• Meets ASME B107.33M dimensional standards
• Limited lifetime warranty from the manufacturer

Compatibility

Designed as a direct-fit impact socket for 1-inch drive pneumatic, hydraulic, and electric impact wrenches requiring a 38mm 6-point metric socket.

Installation Notes

Install and remove using a 1-inch drive impact wrench or manual breaker bar. Always verify the drive detent pin or retaining ring is fully seated before applying torque. Do not use impact sockets on ratchets or hand tools not rated for impact loads, as this can cause socket fracture. Inspect the socket for cracks or deformation before each use and remove from service if damage is found.