Accupro 63310221 Carbide Jobber Drill Bit Wire 42 Altin

Product Description

The ACCUPRO 63310221 is a solid carbide jobber-length drill bit designed for precision drilling in hard and abrasive materials. It carries a wire gauge size of 42, equivalent to 0.0935 inches in decimal, and features a 140-degree notched point angle for aggressive self-centering entry with reduced thrust. The AlTiN (aluminum titanium nitride) coating provides heat resistance and extended tool life in ferrous and hardened workpiece materials. Overall length is 2 inches with a flute length of 0.619 inches and a maximum recommended drilling depth of 0.500 inches. The straight cylindrical shank measures 1/8 inch in diameter for standard chuck compatibility.

This bit is suited for high-performance drilling applications in stainless steel, cast iron, hardened alloys, and other difficult-to-machine materials. The regular spiral flute with a 4xD flute-to-diameter ratio promotes chip evacuation in deep-hole drilling relative to its diameter. The web-thinned, parallel-web configuration reduces cutting resistance at the point. It is used in machine shop, tool room, and production environments where tight tolerance holes in the 0.0935-inch range are required. Right-hand cut suits standard drill press, CNC machining center, and hand-held drill driver applications.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating for elevated heat resistance and extended tool life
• 140-degree notched point angle for fast, self-centering penetration
• Web-thinned parallel web reduces cutting force at entry
• 1/8-inch straight cylindrical shank fits standard chucks and collets
• Right-hand spiral flute promotes chip clearing during through and blind-hole drilling

Compatibility

Designed as a high-performance replacement or primary tooling option for applications requiring a wire size 42 (0.0935 inch) drill bit with a 1/8-inch straight shank, compatible with standard drill chucks, ER collet systems, and CNC tool holders accepting that shank diameter.

Installation Notes

Install in a properly sized chuck or collet, ensuring the shank is fully seated and runout is minimized before operation. Solid carbide tooling is brittle and should not be used in applications with significant side load or interrupted cuts without appropriate fixturing. Do not exceed the recommended drilling depth of 0.500 inches per pass without retracting to clear chips. Use appropriate cutting fluid or coolant where possible to preserve coating life, as this bit does not support through-coolant delivery.