Hertel K020123AS25 Spiral Point Tap M4x0.70 Metric Coarse

Product Description

The HERTEL K020123AS25 is a spiral point tap designed for threading M4x0.70 metric coarse internal threads in through-hole applications. It is manufactured from high-speed steel and finished with a titanium nitride (TiN) coating, which extends tool life by reducing friction and wear during cutting. The 2-flute, plug chamfer design pushes chips forward ahead of the cut, making it well-suited for through-hole tapping on CNC machines and manual equipment alike. Machinists and tool-and-die professionals rely on this tap for reliable thread production in metals and similar materials where a clean, consistent D2 thread limit is required.

This tap is intended for metric coarse threading in through-hole configurations across a range of production and maintenance environments. Its plug chamfer provides a gradual lead-in that distributes cutting forces evenly at the start of the thread. The right-hand thread direction makes it compatible with standard tapping heads, turret lathes, drill presses, and CNC machining centers. It is appropriate for use in job shops, production facilities, and maintenance operations where M4x0.70 thread standards must be met.

Key Features

• M4x0.70 metric coarse thread profile for standardized thread production
• TiN coating reduces friction and extends tool life compared to uncoated HSS
• 2-flute spiral point design pushes chips forward, ideal for through-hole tapping
• Plug chamfer provides controlled lead-in and distributes cutting load
• D2 thread limit for consistent, on-tolerance metric threads
• Right-hand thread direction compatible with standard tapping equipment

Compatibility

Designed as an OEM-style replacement or direct-use spiral point tap for through-hole M4x0.70 metric coarse threading applications on standard tapping heads, CNC machining centers, and manual drill presses.

Installation Notes

This tap is installed and operated by machinists and tooling technicians. Secure the workpiece firmly before tapping and ensure the tap is properly aligned with the pilot hole to avoid tap breakage. Use an appropriate cutting fluid or tapping compound for the material being threaded. Follow all machine guarding and lockout/tagout procedures before changing or setting tooling in powered equipment.