Hertel 79892238 Solid Carbide Jobber Drill Bit Wire Size 20

Product Description

The HERTEL 79892238 is a solid carbide jobber-length drill bit sized to wire gauge number 20, with a decimal diameter of 0.1610 inches. It features a 118-degree standard point angle and a bright (uncoated) finish that suits a wide range of materials. The bit is web-thinned with a tapered web configuration, which reduces thrust and improves chip flow at the tip. Overall length is 2.5 inches, with a flute length of 1.375 inches. The straight-cylindrical shank measures 0.1610 inches in diameter. This is a high-performance grade C2 carbide bit intended for use by machinists, tool-and-die techs, and maintenance professionals who require tight diameter tolerances.

This drill bit is suited for precision hole-making in ferrous and non-ferrous metals, plastics, and composites in production and maintenance environments. The regular spiral with two flutes provides efficient chip evacuation in short-to-moderate depth holes. Jobber-length geometry keeps the bit rigid enough for accurate drilling without excessive deflection. It fits standard drill chucks and CNC toolholders that accept straight-cylindrical shanks at the 0.1610-inch shank diameter. No coolant-through capability is present, so external cutting fluid or dry operation is used based on material requirements.

Key Features

• Solid carbide construction at material grade C2 for hardness and wear resistance
• Wire gauge number 20 sizing at 0.1610 inches with a tolerance of -0.0005 to 0.0000 inches
• 118-degree standard point angle with web-thinning for reduced entry thrust
• Bright finish — no coating applied, suitable for a wide range of workpiece materials
• Regular spiral, two-flute design for efficient chip removal in jobber-length applications
• Straight-cylindrical shank compatible with standard drill chucks and CNC collet holders

Compatibility

Designed as a direct-fit replacement for jobber-length drill bits in wire gauge number 20 (0.1610 inches) with straight-cylindrical shanks. Fits any standard drill chuck or collet holder accepting a 0.1610-inch shank diameter.

Installation Notes

Installation of this bit requires a drill press, hand drill, or CNC machining center with a chuck or collet rated for the 0.1610-inch straight shank. Secure the shank fully in the chuck before operation and verify runout is within acceptable limits before beginning a cut. Apply appropriate cutting fluid for the workpiece material unless operating dry is specified. Carbide is brittle — avoid lateral loading or prying forces that can chip the cutting edges.