Milwaukee Tool 48-89-4636 Reduced Shank Drill Bit 5/8 in

Product Description

The MILWAUKEE TOOL 48-89-4636 is a reduced shank drill bit designed for jobsite drilling applications where a standard shank would not fit a 1/2-inch chuck. The bit is machined from high speed steel and carries a coated finish for added wear resistance. At 5/8 inch in diameter with a 1/2-inch Weldon shank, it allows larger-diameter drilling without requiring a larger chuck. The 135-degree split point reduces walking on entry and decreases the force needed to start the cut. Overall length is 6 inches with a 3-inch flute length, giving the bit a practical reach for through-hole work in steel, wood, and similar materials.

This bit is suited for licensed electricians, plumbers, HVAC techs, and general construction tradespeople who need to bore large-diameter holes at the jobsite. The Weldon shank features three flats that lock securely into a set-screw chuck, preventing bit rotation under load. It is a practical choice for drilling through studs, plates, and sheet metal where a 5/8-inch hole is required and only a 1/2-inch drive tool is on hand.

Key Features

• 5/8-inch cutting diameter with a 1/2-inch reduced Weldon shank for use in standard 1/2-inch chuck tools
• 135-degree split point minimizes walking and reduces feed pressure at startup
• High speed steel construction for durability across steel, wood, and composite materials
• Coated finish extends tool life by reducing friction and heat buildup
• Three-flat Weldon shank prevents slippage under torque load
• 6-inch overall length with 3-inch maximum drilling depth suits through-hole jobsite applications

Compatibility

Designed as an OEM-style replacement drill bit compatible with 1/2-inch Weldon-shank set-screw chucks and drill drivers used in general jobsite drilling applications.

Installation Notes

Installation is performed by licensed tradespeople or qualified contractors using a drill or drill press equipped with a compatible 1/2-inch Weldon-shank chuck. Confirm the set screws are fully tightened against all three flats before operation to prevent shank slippage. Wear appropriate eye protection and secure the workpiece before drilling. Allow the bit to cool between extended cuts to preserve the cutting edge and coating.