Hertel H-81197050000 Spotting Drill 5mm 90deg Cobalt

Product Description

The HERTEL H-81197050000 is a cobalt M-35 (HSS-E) spotting drill designed to accurately locate and start holes before a follow-up twist drill or boring operation. The 90-degree point angle creates a precise center indentation that keeps the subsequent drill on target and reduces walking on flat or curved workpiece surfaces. With a cutting diameter of 5 mm (0.1969 inches) and an overall length of 4.75 inches, this single-ended drill fits standard straight-cylindrical tool holders. The spiral flute geometry with a web-thinned tip reduces thrust and improves chip clearance at the start of the cut. Licensed machinists, toolroom technicians, and CNC operators working in general-purpose metalworking applications will find this drill well suited for production and maintenance environments.

This spotting drill is intended for general-purpose metalworking on ferrous and non-ferrous materials where accurate hole location is required before drilling, countersinking, or boring. The cobalt M-35 (HSS-E) construction handles mild alloy steels, stainless steels, and cast iron better than standard high-speed steel, making it a practical choice in shops that run a range of materials without dedicated carbide tooling. It is appropriate for use in manual mills, drill presses, and CNC machining centers equipped with a straight-shank collet or drill chuck. Right-hand cutting direction is standard for conventional machine spindle rotation.

Key Features

• Cobalt M-35 (HSS-E) tool material for improved heat and wear resistance over standard HSS
• 90-degree point angle for accurate spotting and countersink-style seat generation
• Web-thinned tip reduces axial thrust and improves centering performance
• Spiral flute design with 2 flutes promotes chip evacuation during entry cuts
• Bright/uncoated finish — ready to run as supplied, no coating break-in required
• Straight-cylindrical shank fits standard collet chucks and drill chucks without adapters

Compatibility

Designed as a general-purpose spotting drill for use in any machine tool equipped with a straight-shank collet or drill chuck accepting a 5 mm (0.1969 inch) diameter shank.

Installation Notes

Installation and use of this tool should be performed by qualified machinists or CNC operators familiar with cutting tool setup and machine operation. Always power down and lock out the spindle before loading or removing the tool from the holder. Confirm shank runout with a dial indicator before production use to avoid premature tool wear or inaccurate spotting. Follow the machine manufacturer and ANSI B11 series safe-use guidelines for drilling operations.