Hertel 83246231 Straight-flute Drill Bit No. 44 Carbide

Product Description

The HERTEL 83246231 is a solid carbide straight-flute drill bit designed for precision drilling in hard and difficult-to-machine metals. It carries a No. 44 wire gauge size with a decimal diameter of 0.0860 inches and features a 140-degree notched point for improved centering and reduced thrust. The C2 carbide grade provides the hardness and wear resistance needed when working through tough workpiece materials. The bright, uncoated finish is standard for this grade and is suitable for dry cutting or use with cutting fluid. Two right-hand flutes with web thinning improve chip evacuation and reduce walking at entry. Licensed machinists and precision fabricators are the typical end users for this tooling.

This drill bit is rated for use in chrome alloy, heat-treated alloy, nickel alloy, stainless steel, carbon steel, and titanium alloy. It is well-suited for aerospace, defense, and industrial manufacturing environments where tight hole tolerances and material hardness demand carbide tooling over high-speed steel. The 0.0860-inch diameter makes it appropriate for small-diameter pilot holes, through-holes for fasteners, and fine detail work on machined components. The diameter tolerance is held to +0.0000 to -0.0005 inches, supporting consistent, repeatable results across production runs.

Key Features

• Solid C2 carbide construction for high hardness and wear resistance in tough alloys
• 140-degree notched point reduces thrust and improves self-centering on entry
• Web-thinned geometry promotes chip flow and lowers cutting forces
• Right-hand cutting direction compatible with standard drill presses and CNC machining centers
• Bright/uncoated finish suitable for dry or wet cutting applications
• Tight diameter tolerance of +0.0000 to -0.0005 inches for precision hole requirements

Compatibility

Designed for use in chrome alloy, heat-treated alloy, nickel alloy, stainless steel, steel, and titanium alloy workpieces as both primary and secondary workpiece materials. Suitable for standard drill presses, CNC machining centers, and manual milling setups that accept straight-shank tooling at the 0.0860-inch shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool and die professionals familiar with carbide tooling. Secure the straight shank firmly in the chuck or collet before operation and verify runout before cutting to prevent premature tip breakage. Carbide is brittle compared to high-speed steel — avoid side loading or interrupted cuts that are not within the design parameters of the bit. Always follow applicable workplace safety standards when operating rotating cutting tools.