Hertel H-81197158700 Cobalt Spotting Drill 5/8 in

Product Description

The HERTEL H-81197158700 is a cobalt spotting drill designed to accurately locate and start holes before finish drilling operations. Built from Cobalt M-35 (HSS-E) tool steel, it delivers improved heat resistance and edge retention compared to standard high-speed steel, making it well suited to harder workpiece materials. The 90-degree drill point angle creates a precise center impression, reducing wander during subsequent drilling. With an 8-inch overall length and a 5/8-inch cutting diameter, this tool handles a range of general-purpose spotting applications in machine shop, production, and maintenance environments. The bright, uncoated finish is compatible with most cutting fluids.

This spotting drill is intended for use in CNC machining centers, knee mills, drill presses, and manual lathes where accurate hole location is required before reaming, tapping, or finish drilling. The straight cylindrical shank seats directly in standard drill chucks and collets sized for 5/8-inch tooling. Its single-ended, right-hand cutting configuration suits typical production and job-shop workflows. General-purpose tool performance classification makes it appropriate for a broad range of ferrous and non-ferrous workpiece materials encountered in metalworking and fabrication trades.

Key Features

• Cobalt M-35 (HSS-E) construction for increased heat and wear resistance over standard HSS
• 90-degree drill point angle provides accurate center spotting and reduces drill wander
• Bright, uncoated finish compatible with water-soluble and oil-based cutting fluids
• Web-thinned point reduces thrust requirements and improves chip clearance
• Two-flute spiral design promotes efficient chip evacuation
• Straight cylindrical shank fits standard 5/8-inch chucks and collets

Compatibility

Designed as a general-purpose spotting drill for use in standard drill chucks and collets accepting a 5/8-inch straight cylindrical shank on CNC and manual machine tools.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool is secured with proper torque before initiating a cut. Verify chuck or collet bore matches the 5/8-inch shank diameter before clamping. Always use appropriate cutting fluid for the workpiece material and inspect the cutting edge for wear or chipping before each use.