Hertel 04138848 Cobalt Jobber Drill No. 37 135 Deg

Product Description

The HERTEL 04138848 is a cobalt jobber-length drill bit sized to wire gauge No. 37 (0.1040 inches decimal), designed for holemaking in tough materials where standard high-speed steel bits fall short. The 135-degree split point reduces walking and lowers thrust required at entry, making it well-suited for hard metals, stainless, and heat-resistant alloys. The bit carries an oxide and TiN coating that helps resist heat buildup and extends cutting life. At 2.5 inches overall length with a 1.4375-inch flute, it fits standard drill chucks and is sold individually. Licensed trades and industrial machinists are the primary users.

This bit is applied in metalworking, mechanical trades, and fabrication shops where precise small-diameter holes are required in ferrous and non-ferrous metals, including stainless steel and hardened alloys. The regular spiral flute and web-thinned, tapered web configuration promote chip evacuation and consistent hole finish. It is appropriate for hand-held drill operations and bench-mounted drill press work where a straight-cylindrical shank fits standard 3-jaw chucks. The heavy-duty grade rating makes it a reliable choice for repetitive production drilling tasks.

Key Features

• Wire gauge No. 37 sizing at 0.1040 inches decimal diameter
• 135-degree split point reduces walking and entry thrust
• Cobalt construction handles elevated heat without softening
• Oxide and TiN dual coating extends service life in abrasive materials
• Web-thinned tapered web improves chip flow and reduces torque load
• Right-hand cut, regular spiral flute, straight-cylindrical shank for standard chuck compatibility

Compatibility

Designed as an OEM-style jobber drill replacement for applications requiring a No. 37 wire gauge diameter (0.1040 inches) straight-shank bit in the 0.1000 to 0.1500 inch size range.

Installation Notes

Install and remove drill bits only after the drill or drill press is fully powered down and the chuck is stationary. Secure the straight-cylindrical shank firmly in the chuck jaws, verifying concentricity before operation to prevent premature wear or bit breakage. Use appropriate cutting fluid or coolant for the material being drilled; this bit does not support coolant-through delivery. Follow applicable shop safety codes and PPE requirements when performing holemaking operations.