Hertel 42174 Screw Machine Drill Bit 1/16 in Cobalt

Product Description

The HERTEL 42174 is a screw machine length cobalt drill bit designed for drilling in hard, abrasion-resistant materials where standard high-speed steel bits fall short. Built from M35 cobalt alloy with a straw coating, this bit measures 0.0625 inches (1/16 inch) in diameter with an overall length of 1.625 inches. The 135-degree split-point geometry reduces walking and improves penetration in tough workpieces. The shorter screw machine length body provides added rigidity in drill presses and CNC setups, making it a reliable choice for production drilling in tight-tolerance applications.

This bit is suited for trade professionals and machinists drilling into hardened materials, heat-treatable alloyed steels, stainless steel, and titanium alloys. The screw machine length format is commonly used in production environments where stub-length rigidity helps control hole placement and reduces deflection. It fits standard straight-shank chucks and collets and is appropriate for both manual drill presses and automated machining centers where consistent, repeatable results are required.

Key Features

• M35 cobalt construction for heat resistance in hard-material drilling
• 135-degree standard point angle reduces bit walking on entry
• Straw coating provides mild lubricity and oxidation resistance
• Screw machine (stub) length body increases rigidity and reduces deflection
• Right-hand cutting, 2-flute regular spiral for efficient chip evacuation
• Straight shank fits standard drill chucks and collets without adapters

Compatibility

Designed as an OEM-style replacement or production-use drill bit for applications involving hardened materials, heat-treatable alloyed steels, stainless steel, and titanium alloy workpieces requiring a 1/16 inch diameter straight-shank cobalt bit.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drill press and CNC operating procedures. Secure the workpiece firmly before drilling and verify chuck runout before production use. Use appropriate cutting fluid or coolant on stainless and titanium workpieces to extend bit life, noting this bit does not have through-coolant capability. Inspect the cutting edges before each use and replace the bit if chipping or wear is observed.