Accupro 63310429 Carbide Jobber Drill Bit No 7 Altin

Product Description

The ACCUPRO 63310429 is a solid carbide jobber-length drill bit in No. 7 wire size (0.2010 inches), designed for high-performance drilling in hard and abrasive materials. It features a 140-degree notched point that reduces thrust and self-centers on entry without a center punch. The AlTiN (aluminum titanium nitride) coating raises surface hardness and thermal resistance, making it well suited for dry cutting or minimal-lubrication applications. Overall length is 2.5 inches with a flute length of 1.005 inches and a maximum drilling depth of 0.800 inches. The straight cylindrical shank measures 1/4 inch in diameter for direct chuck mounting. This bit is sold individually and is intended for use by machinists, maintenance technicians, and trade professionals working with ferrous metals, stainless steel, cast iron, and similar materials.

This drill bit is appropriate for production and maintenance drilling operations in metalworking environments. The regular spiral flute and 4xD flute-to-diameter ratio support chip evacuation in through-hole and blind-hole applications. The web-thinned, parallel-web configuration reduces cutting resistance at the tip, which is particularly useful when drilling tougher alloys or thinner-walled sections. It fits standard drill chucks and collet systems accepting a 1/4-inch straight shank. Applications include precision hole drilling in steel fabrication, mechanical assembly, and HVAC or plumbing rough-in work requiring accurate wire-gauge-sized holes.

Key Features

• Solid carbide construction for superior hardness and wear resistance compared to high-speed steel
• AlTiN coating increases thermal resistance and extends tool life in dry or semi-dry cutting conditions
• 140-degree notched point reduces entry thrust and improves self-centering on flat surfaces
• Web-thinned parallel web lowers cutting resistance and improves chip flow at the drill tip
• Regular spiral flute with 4xD ratio supports consistent chip evacuation in ferrous and hard materials
• 1/4-inch straight cylindrical shank fits standard drill chucks and collet holders without adapters

Compatibility

Designed as a high-performance replacement or addition for any setup requiring a No. 7 wire-size (0.2010-inch) jobber-length drill bit with a 1/4-inch straight cylindrical shank. Compatible with standard keyless and keyed drill chucks and 1/4-inch collet systems used in drill presses, CNC machining centers, and hand drills.

Installation Notes

Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable tolerance for the application. Solid carbide bits are brittle relative to high-speed steel — avoid side loads, interrupted cuts without adequate support, and excessive feed rates that can cause tip fracture. When drilling hard alloys, use cutting fluid or coolant where permitted to extend coating life. Inspect the cutting edges before each use; a chipped or worn notched point should be reground or replaced before drilling.