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The MILWAUKEE TOOL 49-66-5144 is a 1/2 inch drive impact hex bit socket designed for high-torque fastening applications in the field and shop. Built to handle the rotational force produced by impact wrenches and impact drivers, this socket accepts 1/2 inch hex fasteners and measures 2.62 inches in overall length. It is a single-piece unit intended for use by electricians, plumbers, HVAC technicians, and mechanical contractors who rely on impact-rated tooling for production-speed work. The compact form factor suits confined fastening scenarios while still delivering the toughness needed for repeated impact cycles.
This socket is well suited for residential and light commercial trade applications where 1/2 inch hex head fasteners are common, including equipment mounting, panel work, mechanical assembly, and structural connections. It pairs directly with any standard 1/2 inch square drive impact wrench or impact ratchet. The single-piece package makes it a practical add-on or replacement unit for an existing socket set.
Designed as an OEM-style replacement or standalone socket compatible with 1/2 inch square drive impact wrenches and impact ratchets that accept standard square drive tooling.
This socket is installed and used by licensed tradespeople including electricians, HVAC technicians, and plumbers working with impact-rated hand tools. Always confirm the square drive size of the impact tool before attaching the socket. Inspect the socket for cracks or deformation before each use and replace if any wear is visible. Do not use impact-rated sockets with non-impact hand ratchets in applications that exceed the tool or fastener torque rating.
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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