Disston Company 120808 Masonry Drill Bit 5/16x6 Inch

Product Description

The DISSTON COMPANY 120808 is an extra-length masonry drill bit designed for rotary drilling into common masonry materials. The bit measures 5/16 inches in diameter with a 6-inch working length and features a 1/4-inch shank for compatibility with standard drill chucks. A positive point angle geometry promotes quick, accurate penetration with minimal walking on entry. The zinc surface finish provides a degree of corrosion resistance during storage and use. This bit is suited for trade professionals and skilled tradespeople who need reliable performance in light-to-moderate masonry applications.

The 120808 is recommended for drilling cinder block, common brick, plaster, and ceramic tile. It is rated for moderate use in harder substrates including hard brick, glazed tile, and dry concrete. The extra-length body gives added reach when drilling through thicker masonry sections or when working in recessed or deep-cavity applications. It is sold individually on a carded retail package, making it appropriate for both shop stock and field carry.

Key Features

• 5/16-inch diameter by 6-inch extra-length design for deep-reach masonry drilling
• 1/4-inch shank fits standard keyless and keyed drill chucks
• Positive point angle for fast, accurate bit entry with reduced walking
• Zinc surface finish for corrosion resistance
• Suitable for cinder block, common brick, plaster, ceramic tile, glazed tile, and dry concrete
• Carded single-piece packaging for easy stocking and point-of-use identification

Compatibility

Designed for use in standard rotary drills with a 1/4-inch chuck or 1/4-inch collet. Recommended for drilling cinder block, common brick, plaster, and ceramic tile, with rated moderate performance in hard brick, glazed tile, and dry concrete.

Installation Notes

Installation of masonry anchors or fasteners using this bit is typically performed by general contractors, electricians, plumbers, or HVAC technicians during rough-in or fixture-mounting operations. Always ensure the drill is set to rotary mode only when using standard masonry bits — hammer mode requires bits specifically rated for percussion use. Wear appropriate eye protection and a dust mask when drilling masonry materials. Do not force the bit; allow the cutting tip to advance at a steady, controlled feed rate to avoid tip damage or premature wear.