Hertel H-81197127000 Cobalt Spotting Drill 90 Degree

Product Description

The HERTEL H-81197127000 is a 90-degree cobalt spotting drill designed for precise hole location and chamfering in metal fabrication and machining applications. Manufactured from Cobalt M-35 (HSS-E) material, this single-ended drill delivers improved heat and wear resistance compared to standard high-speed steel. The cutting diameter measures 0.5000 inches, with an overall length of 6.75 inches and a bright, uncoated finish. The web-thinned geometry reduces thrust forces at the cutting tip, supporting accurate spot placement before through-drilling. This tool is intended for use by machinists, tool-and-die technicians, and maintenance tradespeople working with drill presses, lathes, or CNC machining centers.

This spotting drill is suited for general-purpose metal drilling operations in shop and field environments. It is commonly used to establish a precise starting point for twist drills, preventing bit walk on flat or angled workpiece surfaces. The right-hand cutting direction and spiral flute design make it compatible with standard right-hand spindle equipment. Applications include production machining, fabrication shops, and maintenance facilities working in steel, stainless steel, cast iron, and other ferrous materials where cobalt tooling is appropriate.

Key Features

• Cobalt M-35 (HSS-E) construction for enhanced heat and abrasion resistance
• 90-degree drill point angle for accurate spotting and chamfering
• Web-thinned tip reduces cutting thrust and improves centering accuracy
• Spiral flute design with 2 flutes promotes chip evacuation
• Bright, uncoated finish suitable for general-purpose ferrous metal applications
• Straight-cylindrical shank for use in standard drill chucks and collets

Compatibility

Designed as a general-purpose spotting drill compatible with standard drill presses, lathes, and CNC machining centers equipped with a 1/2 inch capacity chuck or collet accepting a straight-cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with rotating cutting tools. Ensure the spindle is fully stopped and de-energized before loading or removing the tool from the chuck or collet. Confirm the shank is fully seated and properly clamped before operation. Use appropriate cutting fluid or coolant as required by the workpiece material to maintain tool life.