Hertel 83246363 Straight-flute Drill Bit No. 31 Carbide

Product Description

The HERTEL 83246363 is a straight-flute drill bit in wire gauge size No. 31, measuring 0.1200 inches in diameter, manufactured from C2-grade solid carbide with a bright, uncoated finish. It features a 140-degree notched point with web thinning for improved chip evacuation and reduced thrust when entering the workpiece. Designed for right-hand cutting, this bit is suited for production and maintenance drilling applications where consistent hole quality and tool life in hard or abrasive materials are required. Machinists and tool-and-die professionals are the primary users of this type of precision carbide drill.

This bit is engineered for drilling chrome alloy, heat-treated alloy, nickel alloy, stainless steel, steel, and titanium alloy workpiece materials. The straight-flute geometry is particularly effective in thin or interrupted cuts where standard spiral flutes may deflect. Typical applications include aerospace component drilling, precision machined parts, and high-strength fastener hole preparation where tight diameter tolerances must be maintained.

Key Features

• C2-grade solid carbide construction for hardness and wear resistance in ferrous and exotic alloys
• Straight-flute design reduces lateral deflection in short, thin, or interrupted cuts
• 140-degree notched point with web thinning lowers entry thrust and centers the bit accurately
• Right-hand cutting direction compatible with standard drill press and CNC spindle rotation
• Bright, uncoated finish maintains precise shank diameter for consistent chuck seating
• Diameter tolerance of +0.0000 to -0.0005 inches ensures close-fit hole accuracy

Compatibility

Designed as a straight-flute carbide drill bit suitable for use in manual drill presses, CNC machining centers, and production drilling fixtures requiring a No. 31 wire gauge diameter of 0.1200 inches.

Installation Notes

Install and remove this bit with the machine fully powered down and the spindle at a complete stop. Secure the shank firmly in a collet or chuck rated for the shank diameter before operation. Solid carbide tooling is brittle — avoid side-loading, interrupted cuts without proper feed control, or dropping the bit on hard surfaces. Consult machine manufacturer feed and speed recommendations for the specific workpiece material before drilling.