Hertel 83246579 Carbide Die Drill Bit 0.1935 in No. 10

Product Description

The HERTEL 83246579 is a solid carbide straight-flute die drill bit designed for precision drilling in hard and difficult-to-machine metals. Built from C2-grade carbide with a bright finish, it measures 0.1935 inches in diameter and corresponds to No. 10 wire size. The 140-degree notched point geometry reduces thrust and improves centering on entry, while web thinning aids chip evacuation in deep or interrupted cuts. With two right-hand flutes and a diameter tolerance of +0.0000 to -0.0005 inches, this bit holds tight tolerances required in die, mold, and precision machining work. Licensed machinists and toolroom technicians are the primary users.

This drill bit is suited for production and toolroom applications where workpiece materials demand carbide hardness and edge retention. Rated primary and secondary workpiece materials include chrome alloy, heat-treated alloy, nickel alloy, stainless steel, carbon steel, and titanium alloy. Straight-flute geometry makes it particularly effective in thin-wall or cross-hole applications where a standard spiral flute would catch or deflect. It performs well in CNC machining centers, drill presses, and manual toolroom operations requiring consistent hole quality across hardened or abrasion-resistant stock.

Key Features

• Solid C2-grade carbide construction for hardness and wear resistance in alloy and stainless materials
• 140-degree notched point reduces entry thrust and self-centers on curved or hardened surfaces
• Web-thinned design improves chip flow and reduces heat buildup at the cutting edge
• Straight-flute geometry prevents deflection in thin-wall, cross-hole, and interrupted-cut applications
• Bright finish with tight diameter tolerance of +0.0000 to -0.0005 inches for precision fitment
• Right-hand cutting direction compatible with standard drill press and CNC spindle rotation

Compatibility

Designed as a direct-fit replacement or new-installation die drill bit for applications requiring a No. 10 wire size, 0.1935-inch diameter carbide straight-flute drill in chrome alloy, heat-treated alloy, nickel alloy, stainless steel, steel, and titanium alloy workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with carbide tooling requirements. Secure the shank firmly in a compatible collet or chuck rated for the shank diameter before operation. Carbide is brittle compared to high-speed steel — avoid side loading, interrupted feeds without proper support, and over-tightening that can crack the shank. Follow machine manufacturer guidelines for spindle speed and feed rate when drilling hardened or abrasion-resistant alloys.