Hertel K020091AS Spiral Point Tap M3x0.50 Metric Coarse

Product Description

The HERTEL K020091AS is a spiral point tap designed for cutting internal metric coarse threads in a variety of materials. Built from high-speed steel with a bright uncoated finish, this tap is used to machine M3x0.50 threads in production and maintenance environments. The plug chamfer style provides a gradual lead-in suitable for through-hole threading applications. With 2 flutes and a right-hand thread direction, the spiral point geometry pushes chips forward ahead of the cutting zone, keeping the flutes clear during operation. Thread limit is D1, indicating a close tolerance fit appropriate for standard metric fastener applications.

This tap is suited for use in CNC machining centers, drill presses, and tapping machines where through-hole M3x0.50 metric coarse threads are required. The compact shank diameter of 0.141 inches and a thread length of 0.625 inches make it appropriate for small-diameter threading work in metals such as aluminum, mild steel, and similar machinable materials. It is commonly used by machinists and maintenance technicians in both production shops and field repair applications.

Key Features

• M3x0.50 metric coarse thread form for standard metric fastener compatibility
• Plug chamfer style designed for through-hole threading applications
• Spiral point geometry pushes chips forward to prevent flute packing
• High-speed steel construction provides durability across a range of machinable metals
• Bright uncoated finish suitable for use with cutting fluids
• Right-hand thread direction, D1 thread limit for close-tolerance fits

Compatibility

Designed as an OEM-style replacement or direct-use spiral point tap for M3x0.50 metric coarse through-hole threading applications on standard tapping machines, CNC machining centers, and manual drill presses.

Installation Notes

This tap should be installed and used by qualified machinists familiar with tapping speeds, feeds, and cutting fluid requirements for the workpiece material. Secure the tap in a properly sized tap holder or chuck before use, and ensure the workpiece is clamped or fixtured to prevent movement. Apply appropriate cutting fluid for the material being tapped. Inspect the tap for wear or chipping before each use and replace if damaged to avoid thread damage or tap breakage.