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The MILWAUKEE TOOL 49-66-5151 is a 3/8 inch drive impact hex bit socket designed for use with impact drivers and impact wrenches in demanding trade applications. Built to handle the high-torque output of impact tools, this socket accepts 5/16 inch (8 mm) hex fasteners and measures 2.62 inches in overall length. At 0.11 pounds, it is a compact, lightweight addition to any impact socket set. Licensed tradespeople and experienced service technicians rely on this style of socket for fastening and removal tasks where a standard chrome socket would fail under repeated impact stress.
This impact hex bit socket is suited for mechanical, HVAC, electrical, and general construction work where hex-head fasteners are common. The 3/8 inch drive size makes it compatible with mid-range impact wrenches and ratchets commonly found on service vehicles and job sites. It is a single-piece socket designed for direct installation onto a 3/8 inch square drive impact tool without adapters.
Designed as an OEM-style impact bit socket for use with 3/8 inch drive impact wrenches and impact ratchets that accept standard square drive accessories.
This socket is installed and removed by hand onto the square drive of a 3/8 inch impact tool. Verify the socket is fully seated on the drive before applying torque. Do not use impact-rated sockets on non-impact hand ratchets for tasks requiring precise torque values without a calibrated torque wrench in the final pass. Inspect the socket for cracks or deformation before each use and remove from service if damage is found.
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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