Hertel Y59918920 Spotting Drill 3/4in 82pt Cobalt M-42

Product Description

The HERTEL Y59918920 is a cobalt M-42 spotting drill designed to accurately locate and start holes before a standard twist drill or boring operation. With a 3/4 inch cutting diameter and an 82-degree drill point angle, it produces a precise center spot that keeps follow-up drills on target without wandering. The overall length is 5.1875 inches, making it a compact, rigid tool suited for CNC machining centers, manual mills, and drill press setups. Machinists, toolroom operators, and production floor personnel are the primary users of this tool in both job-shop and production environments.

This spotting drill is suited for general-purpose spotting and chamfering operations on metals and engineered materials in ferrous and non-ferrous applications. The cobalt M-42 substrate offers increased heat resistance compared to standard high-speed steel, making it appropriate for harder workpiece materials or situations where cutting speeds run higher. It is a single-ended tool with a straight cylindrical shank, compatible with standard drill chucks and collet holders accepting a 3/4 inch shank diameter.

Key Features

• 82-degree point angle for accurate spot location and compatibility with standard drill point geometry
• Cobalt M-42 construction provides improved red-hardness and wear resistance over standard HSS
• 3/4 inch cutting diameter with matching 3/4 inch straight cylindrical shank for secure chuck or collet mounting
• 1.5 inch flute length with 2-flute spiral design at a 20-degree helix angle for efficient chip clearance
• Bright/uncoated finish — no coating buildup to affect dimensional tolerances at the point
• Right-hand cut, single-ended tool for standard spindle rotation setups

Compatibility

Designed as a general-purpose spotting drill for use in standard drill chucks and collet holders with a 3/4 inch bore. Suitable for CNC and manual machining operations where an 82-degree spot angle is specified.

Installation Notes

This tool is installed by qualified machinists in milling machines, machining centers, or drill presses. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the straight cylindrical shank firmly in a drill chuck or collet holder to the appropriate clamping torque per the toolholder manufacturer. Verify spindle speed and feed rate are appropriate for the workpiece material before beginning the spotting operation.