Milwaukee Tool 48-20-7930 Sds-plus Carbide Drill Bit 1/4 in

Product Description

The MILWAUKEE TOOL 48-20-7930 is a carbide-tipped SDS-Plus rotary hammer drill bit designed for through-hole drilling in masonry, concrete, and similar hard substrates. The bit measures 1/4 inch in cutting diameter with a 13/32-inch SDS-Plus shank that locks positively into compatible rotary hammer chucks, allowing the tool to transfer both rotational and percussive force efficiently. The flute length runs 2 inches, and the overall length is 4 inches, making it well suited for shallow-to-mid-depth anchor holes, pass-throughs, and fastener pilot holes. Licensed electricians, HVAC technicians, and plumbers reach for this size when setting conduit anchors, pipe hangers, or equipment mounts in concrete block or poured walls.

This bit is intended for use in residential and light commercial trade work where a compact, short-body SDS-Plus bit is needed. Typical applications include drilling through concrete block, brick, and stone for anchor bolt placement, pipe sleeve penetrations, and equipment mounting. The 1/4-inch diameter is a common size for drop-in anchors and threaded rod installations in mechanical and electrical rough-in work. The SDS-Plus shank format is the industry-standard interface for professional-grade rotary hammers in the 1 to 2 SDS-Plus range.

Key Features

• Carbide cutting tip for durability in masonry and concrete applications
• SDS-Plus shank provides positive chuck engagement and efficient hammer energy transfer
• 1/4-inch cutting diameter suits common anchor and fastener hole requirements
• 4-inch overall length with 2-inch flute length for compact working clearance
• Designed for through-hole drilling in hard substrates

Compatibility

Designed as a standard SDS-Plus shank bit compatible with SDS-Plus rotary hammer tools. Specific tool model compatibility was not provided in the product data; verify chuck interface before installation.

Installation Notes

SDS-Plus bits should be installed by a qualified trade professional following the rotary hammer manufacturer guidelines. Before inserting or removing the bit, disconnect the tool from its power source and confirm the chuck is fully locked before drilling. Use appropriate eye protection and dust management when drilling masonry or concrete, as required by OSHA silica dust regulations. Do not use this bit in a standard keyless drill chuck; SDS-Plus bits require an SDS-Plus or SDS-Plus-compatible chuck.