Hertel 04138160 Cobalt Jobber Drill Bit 1/64 in

Product Description

The HERTEL 04138160 is a cobalt jobber-length drill bit designed for demanding holemaking applications in metal and hard materials. Built to heavy-duty grade standards, this bit features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The cobalt construction with oxide coating provides heat resistance and extended tool life compared to standard high-speed steel bits. At 1/64 inch (0.0156 inch decimal) in diameter, it handles precision small-diameter drilling. The spiral flute and web-thinned, tapered web geometry promote chip evacuation and reduce thrust during drilling. Licensed machinists, pipefitters, and maintenance trades rely on bits like this for accurate pilot holes and close-tolerance work.

This drill bit suits production and maintenance environments where small-diameter, precise entry points are required in ferrous metals, stainless steel, cast iron, and other hard materials. The straight-cylindrical shank accepts standard drill chucks without adapters, making it compatible with hand drills, drill presses, and CNC machining centers running right-hand rotation. The jobber-length series balances reach and rigidity for general-purpose holemaking across a wide range of workpiece thicknesses.

Key Features

• Cobalt construction with oxide coating for heat resistance and extended wear life in hard materials
• 135-degree split point reduces drill walking and lowers required thrust force
• Web-thinned, tapered web geometry improves chip flow and reduces heat buildup at the cutting edge
• Right-hand spiral flute promotes efficient chip evacuation during through-hole drilling
• Straight-cylindrical shank fits standard drill chucks on hand drills, drill presses, and machining centers
• Heavy-duty grade designation for use in demanding production and maintenance applications

Compatibility

Designed as a standard jobber-length drill bit for use in any right-hand rotating drill chuck accepting a straight-cylindrical shank at 1/64 inch diameter, including hand drills, benchtop drill presses, and CNC machining centers.

Installation Notes

Install this bit in a properly sized collet or drill chuck and verify secure seating before operation. Use appropriate cutting fluid or coolant when drilling hard metals to manage heat, even though this bit does not support through-tool coolant delivery. Inspect the cutting edges for wear before each use and replace the bit when point geometry shows deterioration. Follow applicable shop safety standards and wear eye protection during all drilling operations.