Milwaukee Tool 49-66-6605 Impact Socket 1 in 42mm 6-pt

Product Description

The MILWAUKEE TOOL 49-66-6605 is a 1-inch drive, 42mm, 6-point hex impact socket designed for heavy-duty fastening applications in the trades. Built from steel with a black phosphate finish, this standard-length socket is engineered to withstand the high-torque output of 1-inch drive impact wrenches. The 6-point contact geometry reduces the risk of rounding fastener heads under load, making it a reliable choice for industrial assembly, fleet maintenance, heavy equipment service, and structural work. Weighing 1.99 pounds, it is sized for jobs that demand a full 1-inch drive tool platform.

This socket is suited for professional use in settings where large fasteners require consistent, repeatable torque delivery. Typical applications include heavy equipment repair, truck and trailer service, industrial machinery maintenance, and large-format structural fastening. The non-sparking designation makes it appropriate for use in environments where spark hazard is a concern. It is intended for installation by mechanics, millwrights, and trade professionals working with 1-inch drive impact equipment.

Key Features

• 1-inch drive size for use with full-size industrial impact wrenches
• 42mm hex socket opening fits large metric fasteners
• 6-point drive geometry for maximum contact and reduced fastener rounding
• Steel construction with black phosphate finish for corrosion resistance
• Non-sparking design rated for use in spark-sensitive environments
• Standard length profile for straightforward access in most service scenarios

Compatibility

Designed as an OEM-style impact socket for use with 1-inch drive impact wrenches requiring a 42mm hex socket.

Installation Notes

Installation and use should be performed by qualified mechanics or trade professionals familiar with 1-inch drive impact equipment. Ensure the impact wrench is powered down and all energy sources are isolated before changing sockets. Inspect the socket for cracks or deformation before each use and do not use damaged sockets. Never use impact sockets on non-impact hand ratchets beyond their rated capacity.