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The MILWAUKEE TOOL 49-66-6387 is a 6-point impact socket designed for heavy-duty fastening applications. Built for use with 3/4 inch drive impact wrenches, it accepts a 49mm hex fastener and delivers the torque transfer needed for demanding mechanical work. The socket is constructed from steel with a black phosphate finish that resists corrosion and reduces glare. At 1.98 pounds and standard length, it is suited for technicians who need a reliable, non-sparking socket in environments where spark hazard is a concern. Licensed trades including heavy equipment mechanics, industrial maintenance techs, and commercial fleet technicians reach for this socket for high-torque fastener work.
This socket is appropriate for use in industrial, commercial, and fleet maintenance settings where large-diameter fasteners require controlled, high-torque removal or installation. The non-sparking characteristic makes it suitable for use near flammable materials or in environments governed by spark-restriction protocols. Standard-length geometry allows access in typical open-face fastening scenarios without requiring an extension in most applications.
Designed as a standard-length 3/4 inch drive impact socket for use with 3/4 inch drive impact wrenches and drive tools accepting 49mm hex fasteners.
Installation and removal should be performed by a qualified mechanic or maintenance technician familiar with impact tooling and torque requirements. Always ensure the drive tool is powered down or the air supply is disconnected before changing sockets. Confirm the socket is fully seated on the drive anvil before applying torque. Do not use this socket on energized components — it is not insulated for electrical work.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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