Milwaukee Tool 48-20-9125 Hammer Drill Bit 7/16 in

Product Description

The MILWAUKEE TOOL 48-20-9125 is a carbide-tipped rotary hammer drill bit designed for percussion drilling into concrete, block, and brick. Built with a high-speed steel body and a 3-flat shank, this bit transfers torque efficiently while resisting slippage in the chuck. The cutting tip uses a percussion geometry to fracture and clear masonry material with each hammer stroke. At 7/16 inch in diameter with a 4-inch flute length and 6-inch overall length, it handles common anchor hole and through-hole drilling tasks on structural and finish masonry surfaces. Licensed contractors and masonry tradespeople rely on this geometry for consistent, repeatable results in rotary hammer applications.

This bit is suited for residential and light commercial masonry work where anchor setting, conduit penetrations, or fastener holes are required. Typical applications include drilling into poured concrete walls, CMU block, and brick veneer. The 2-flute design provides adequate chip clearance in standard-depth holes. The 3-flat shank seats securely in SDS-compatible and keyed hammer drill chucks equipped to accept that profile, making it a practical carry item for field work.

Key Features

• Carbide-tipped percussion cutting tip for masonry, concrete, block, and brick
• 3-flat shank design resists bit rotation and slippage in the chuck
• High-speed steel flute body for durability under repeated hammer loads
• 7/16 inch cutting diameter suits common anchor and fastener hole sizes
• 4-inch flute length with 6-inch overall length for standard masonry depth requirements
• 2-flute configuration promotes debris evacuation during drilling

Compatibility

Designed as an OEM-style replacement-grade rotary hammer drill bit for use with rotary hammer tools and hammer drills accepting a 3-flat, 1/4 inch shank. Primary workpiece materials are concrete, block, and brick.

Installation Notes

Installation should be performed by qualified tradespeople familiar with rotary hammer operation and applicable jobsite safety requirements. Always confirm the drill chuck is fully seated and locked onto the 3-flat shank before applying power. Wear appropriate eye protection and respiratory protection when drilling masonry. Follow OSHA and jobsite-specific silica dust control requirements when drilling concrete or masonry materials.