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The Milwaukee Tool 49-66-6300 is a 3/4 inch drive, 9/16 inch, 6-point hex impact socket designed for heavy-duty fastening applications in trade and industrial environments. Built from steel with a black phosphate finish, this standard-length socket is rated non-sparking, making it suitable for use in environments where ignition risk is a concern. It is sized for 3/4 inch drive impact wrenches and delivers the wall thickness and geometry needed to handle the torque output of pneumatic and cordless impact tools without rounding or cracking. Electricians, pipefitters, millwrights, and general mechanical contractors are the primary users.
This socket is appropriate for residential, commercial, and light industrial fastening tasks wherever a 9/16 inch hex fastener is encountered with a 3/4 inch drive tool. Standard-length geometry fits most accessible bolt locations without requiring an extension. The non-sparking characteristic makes it a common choice for work near flammable materials or in classified environments where a standard chrome socket would not be permitted. It installs with any 3/4 inch drive impact wrench or ratchet.
Designed for use with 3/4 inch drive impact wrenches, ratchets, and torque multipliers that accept standard 3/4 inch square drive sockets.
Install and remove this socket only with the drive tool powered down or air supply disconnected. Inspect the socket for cracks, deformation, or worn drive engagement before each use and replace if damaged. This socket is intended for impact-rated use only — do not use standard chrome hand-drive sockets as a substitute in impact applications. Follow applicable OSHA and site safety requirements when working in classified or hazardous locations.
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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