Disston Company 691212 Masonry Drill Bit 0.25x6 in

Product Description

The DISSTON COMPANY 691212 is a carbide-tipped rotary percussion masonry drill bit designed for use in standard drills operating in rotary or hammer mode. The bit measures 0.25 inches in diameter and 6 inches in overall length, making it well-suited for moderate-depth anchor and fastener holes in masonry substrates. A black oxide finish provides added surface hardness and corrosion resistance. The carbide tip delivers the impact resistance required to penetrate hard, abrasive materials that would quickly wear down standard high-speed steel bits. HVAC, plumbing, and electrical trades routinely use bits of this type when securing equipment, conduit, and piping to concrete and masonry surfaces.

This bit is recommended for drilling cinder block, common brick, hard brick, plaster, ceramic tile, and glazed tile. It is also rated for wet or dry concrete applications and handles moderate use in marble, granite, and concrete exceeding 6000 psi. The rotary percussion design allows compatibility with both standard rotary drills and hammer drills, giving installers flexibility on the job site without needing to swap tooling.

Key Features

• Carbide-tipped cutting edge for extended service life in abrasive masonry materials
• Black oxide finish adds surface hardness and resists light corrosion
• Compatible with drills in both rotary and hammer mode
• Rated for wet or dry concrete drilling
• Handles moderate use in high-strength concrete over 6000 psi, marble, and granite
• 0.25 inch diameter by 6 inch length suits standard anchor and fastener hole applications

Compatibility

Designed for use in standard rotary drills and hammer drills. Recommended for cinder block, common brick, hard brick, plaster, ceramic tile, glazed tile, wet or dry concrete, and moderate use in marble, granite, and concrete over 6000 psi.

Installation Notes

Install this bit in a drill or hammer drill with a matching 0.25 inch chuck before beginning work. Confirm the drill is set to the appropriate mode — rotary for softer masonry and hammer mode for harder concrete and block. Always wear eye protection and a dust mask when drilling masonry, and verify that no electrical conduit, plumbing, or structural rebar is present in the drilling path before starting. Follow applicable trade codes and manufacturer guidance for anchor placement and hole depth.