Proto J10027ML Impact Socket 1 in Drive 27mm 6-point

Product Description

The PROTO J10027ML is a 1-inch drive, 27mm impact socket designed for heavy-duty fastener work in industrial, commercial, and fleet maintenance settings. Built from alloy steel, it features a 6-point hex drive geometry that delivers maximum torque transfer while reducing the risk of rounding fastener heads under high-load conditions. The overall length is 4 inches, making it suitable for standard reach applications. This socket is intended for use with 1-inch drive impact wrenches and is sized for professionals who work with large-diameter fasteners on trucks, heavy equipment, and structural assemblies.

The J10027ML fits into applications where a 1-inch drive tool is required, including heavy truck wheel service, industrial equipment maintenance, and structural bolting. The 27mm socket size is common on large hex fasteners found on commercial vehicles and construction equipment. Mechanics, millwrights, and heavy equipment technicians are the typical end users for this class of impact socket. It is packaged as a single unit.

Key Features

• 1-inch drive size for use with full-size industrial impact wrenches
• 27mm socket size accommodates large hex fasteners on heavy equipment and commercial vehicles
• 6-point hex drive design maximizes contact area and reduces fastener rounding
• Alloy steel construction provides strength and durability under high-torque impact use
• 4-inch overall length suits standard-reach fastener access

Compatibility

Designed as an OEM-style replacement and standard-fit impact socket for 1-inch drive impact wrenches requiring a 27mm, 6-point hex socket.

Installation Notes

Installation and use should be performed by a qualified mechanic or technician familiar with impact tooling. Always ensure the socket is fully seated on the drive anvil of the impact wrench before applying torque. Never use impact sockets with hand-ratchet tools, as impact-rated and hand-tool-rated sockets are not interchangeable. Inspect the socket for cracks or wear before each use and remove from service if damage is found.