Milwaukee Tool 49-66-6358 Impact Socket 3/4 in Drive 20mm

Product Description

The MILWAUKEE TOOL 49-66-6358 is a 3/4 inch drive, 20mm, 6-point impact socket designed for heavy-duty fastening and removal applications. Built from steel with a black phosphate finish, this standard-length hex drive socket is engineered to withstand the high-torque output of pneumatic and cordless impact wrenches. The 6-point design maximizes contact with fastener flats, reducing rounding under load. At 0.78 pounds, it is a solid, durable option for professionals who need reliable performance on large fasteners in demanding jobsite conditions. The non-sparking construction adds a layer of safety in environments where ignition risk is a concern.

This impact socket is suited for automotive, heavy equipment, industrial maintenance, and mechanical contractor applications where 3/4 inch drive tooling is standard. It fits torque wrenches, impact guns, and breaker bars with a 3/4 inch drive interface. The standard length profile makes it well-suited for most straight-on fastener access situations. Electricians, mechanics, pipefitters, and general contractors working with large-diameter fasteners will find this socket appropriate for their torque tool setups.

Key Features

• 3/4 inch drive, 20mm socket size for large fastener applications
• 6-point hex drive geometry maximizes contact and reduces fastener rounding
• Steel construction with black phosphate finish for corrosion resistance
• Non-sparking design for use in environments with ignition or flammability concerns
• Standard length profile for general-purpose fastener access
• Not insulated — not rated for live electrical work

Compatibility

Designed as a standard OEM-style 3/4 inch drive impact socket compatible with 3/4 inch drive impact wrenches, torque wrenches, and breaker bars accepting 20mm hex fasteners.

Installation Notes

Installation and use should be performed by qualified mechanics, millwrights, or trade professionals familiar with impact tooling. Always confirm the socket drive size matches the tool drive before applying torque. Do not use impact sockets on live electrical equipment as this socket is not insulated. Inspect the socket for cracks or wear before each use and replace if damage is found.