Hertel 89321392 Screw Machine Drill Bit No 10 Hss

Product Description

The HERTEL 89321392 is a screw machine length drill bit sized to No. 10 wire gauge, equivalent to 0.1935 inches in decimal. It is ground from high-speed steel (HSS) with a standard 118-degree split-free point and a bright, uncoated finish. The screw machine length body is shorter than a jobber-length bit, which improves rigidity and reduces deflection in close-tolerance drilling applications. With a right-hand cutting direction and a 2.25-inch overall length, this bit is suited for production drilling, CNC work, and bench-drill operations where stub-length tooling is preferred. Machinists and toolroom technicians are the primary users of this style of drill bit.

This drill bit is used in general-purpose drilling of ferrous and non-ferrous metals, plastics, and composite materials. The screw machine length profile makes it a common choice for turret lathes, drill presses, and machining centers where tool overhang must be minimized. It fits standard drill chucks and collet holders designed for fractional or wire-gauge tooling. Typical applications include through-hole and blind-hole drilling in production shop and maintenance environments.

Key Features

• No. 10 wire gauge size at 0.1935 inches decimal equivalent
• 118-degree drill point angle for general-purpose material compatibility
• High-speed steel construction for durability across common workpiece materials
• Screw machine (stub) length body reduces deflection and improves hole accuracy
• Bright uncoated finish — no coating to chip or separate during use
• Right-hand cutting direction for standard chuck and collet use

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any standard drill chuck or collet holder accepting No. 10 wire gauge or 0.1935-inch diameter tooling.

Installation Notes

This bit is installed by a machinist or toolroom technician into a drill press, lathe turret, or machining center chuck. Secure the shank fully in the chuck or collet before operation and confirm runout is within acceptable limits for the application. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point shows signs of heat damage or dulling.