Hertel 74130691 Screw Machine Drill Bit Size 17 Cobalt

Product Description

The HERTEL 74130691 is a cobalt screw machine length drill bit designed for high-speed drilling in tough materials including hardened steels, stainless steel, and abrasion-resistant alloys. Built to wire gauge Size 17 (0.1730 inches decimal), it features a 135-degree split point that self-centers on contact, reducing walking and the need for a center punch. The stub-length body keeps the bit rigid and minimizes deflection in short-reach drilling applications. A web-thinned, parallel web configuration reduces cutting resistance and improves chip evacuation through the two regular spiral flutes. Overall length is 2-3/16 inches with a 1-1/8 inch flute length. The straight cylindrical shank mounts in standard drill chucks and quick-change holders.

This bit is suited for production and maintenance drilling in metal fabrication shops, machine shops, and industrial maintenance environments. Its cobalt construction with straw finish handles elevated cutting temperatures better than standard high-speed steel, making it appropriate for interrupted cuts and harder workpiece materials. Right-hand cutting direction is standard for conventional drill press and hand-drill use. It is sold individually and is a single-piece package quantity.

Key Features

• Cobalt tool material for elevated heat resistance in hard-material drilling
• 135-degree split point self-centers and reduces thrust force
• Web-thinned parallel web lowers cutting resistance and aids chip flow
• Screw machine (stub) length provides rigidity and reduces deflection
• Two regular spiral flutes for efficient chip evacuation
• Straight cylindrical shank fits standard chucks and quick-change holders

Compatibility

Designed as an OEM-style screw machine length drill bit in the HSCO135 series, compatible with standard drill chucks and quick-change holders accepting straight cylindrical shanks in the 0.1500 to 0.2000 inch decimal inch drill bit size range.

Installation Notes

Installation and use of this drill bit should be performed by machinists or qualified trade professionals familiar with drill press or powered hand-drill operation. Secure the straight shank firmly in the chuck before operation and verify the workpiece is clamped or fixtured to prevent movement. Use appropriate cutting fluid or lubricant for the workpiece material to extend bit life. Inspect the cutting edges for wear or chipping before each use and replace the bit if the split point or flutes show damage.