Avanti Pro Masonry Drill Bit PMAPC1040 1/4 Inch x 6 Inch (Straight Shank Carbide Tipped Steel Dual Flute Brick Block Concrete Fastening)

Industrial-Grade 1/4 Inch x 6 Inch Carbide Tipped Straight Shank Masonry Drill Bit

The Avanti Pro PMAPC1040 Masonry Drill Bit functions as an impact-rated rotational drilling tool engineered to bore 1/4-inch anchor and fastener holes up to 4 inches deep into brick, cinder block, and poured concrete. Built with a reinforced micro-grain carbide insert tip brazed to an alloy steel body, this 6-inch overall length bit runs on standard variable-speed corded and cordless rotary drills. Featuring a 10mm (0.39-inch) straight shank that locks securely into 1/2-inch keyless and keyed drill chucks, the bit utilizes dual dust-extraction flutes to purge abrasive masonry slurry during drilling passes to prevent bit binding and thermal stress.

Best Used For:

• Masonry Anchor Hole Preparation: Drilling precise 1/4-inch diameter pilot holes for screw anchors, tapcons, and expansion shields in solid brick and poured concrete walls.
• Concrete Block Fastener Installation: Boring clean 4-inch deep holes through hollow cinder blocks and mortar joints without fracturing surrounding material.
• Rotary Drill Fastening Projects: Executing smooth, chatter-free masonry drilling runs using standard variable-speed rotary drills in non-hammer mode.

Key Performance & Safety Features

• Brazed Carbide Tip: Impact-rated tungsten carbide tip maintains sharp cutting edges when penetrating highly abrasive stone and masonry.
• Dual Flute Slurry Removal: Specialized spiral flute geometry rapidly clears pulverized dust and aggregate from the borehole to prevent binding.
• 10mm Straight Shank: Universal 0.39-inch straight shank provides broad chuck clamping surface in standard corded or cordless drills.
• 4-Inch Extended Drilling Depth: 6-inch total length delivers a full 4 inches of usable drilling depth for long structural masonry anchors.
• Impact-Rated Steel Core: Alloy steel body absorbs rotational torque and impact energy for long operational life in tough materials.

What's Included

• (1) Avanti Pro PMAPC1040 1/4" x 6" Carbide Tipped Masonry Drill Bit

Technical Specifications

Pro-Tip: When drilling deep anchor holes in masonry, pull the bit back partially out of the hole every 1 to 2 inches of depth. This peck-drilling action clears packed concrete dust out of the dual flutes, reducing tip friction heat and ensuring clean, full-depth 4-inch hole preparation.