Milwaukee Tool 49-66-6381 Impact Socket 3/4 in 43mm 6-pt

Product Description

The MILWAUKEE TOOL 49-66-6381 is a 3/4 inch drive, 43mm impact socket built for high-torque power tool applications. It features a 6-point hex drive geometry that maximizes contact with fastener flats, reducing the risk of rounding under load. Constructed from steel with a black phosphate finish, the socket resists corrosion and wear in demanding job site conditions. The non-sparking design makes it suitable for use in environments where ignition risk is a concern. At standard length, it fits most impact wrench applications without requiring an extension in typical clearance scenarios.

This socket is intended for use with 3/4 inch drive impact wrenches in commercial, industrial, and heavy-duty trade applications. It is commonly installed by mechanical contractors, millwrights, pipefitters, and electricians working on large fasteners in structural, mechanical, or equipment-mounting contexts. The 43mm size targets large-diameter fasteners found in heavy equipment, utility infrastructure, and industrial machinery. The non-sparking characteristic makes it appropriate for petrochemical, mining, and other hazardous-location work environments where spark suppression is required.

Key Features

• 3/4 inch drive fits standard heavy-duty impact wrenches
• 43mm 6-point hex geometry maximizes flat contact and reduces fastener rounding
• Non-sparking steel construction rated for hazardous-location use
• Black phosphate finish provides corrosion and abrasion resistance
• Standard length profile suits most direct-drive impact applications
• Not insulated — confirm voltage-rated tools and PPE are used in electrical environments

Compatibility

Designed as an OEM-style impact socket for use with 3/4 inch drive impact wrenches and breaker bars in heavy-duty trade and industrial applications.

Installation Notes

Installation and removal should be performed by qualified tradespeople familiar with high-torque impact tooling. Always confirm the socket is fully seated on the drive anvil before applying torque, and verify the retaining pin or ring is secure. De-energize, lock out, and tag out any equipment before servicing fasteners on live mechanical or electrical systems. This socket is not insulated and must not be used as a voltage-rated tool in live electrical work.