Hertel K025182AS M5x0.90 Straight Flute Tap 4 Flutes Hss

Product Description

The HERTEL K025182AS is a straight flute plug tap designed for threading M5x0.90 Metric Special holes in metalworking applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers reliable performance in through-hole and blind-hole tapping operations. The plug chamfer provides gradual thread engagement, making it suitable for general-purpose tapping where a lead-in is needed. With 4 flutes and a D3 thread limit, this tap holds close tolerances and handles a range of workpiece materials. Overall length is 2.375 inches, thread length is 0.875 inches, and shank diameter is 0.194 inches. It is a right-hand thread tool sold individually.

This tap is used in machine shops, maintenance facilities, and production environments where M5 Metric Special threads are required. Straight flute geometry makes it well suited for tapping short-chipping materials such as cast iron, brass, and hard plastics. The plug chamfer style works in both through and shallow blind holes. Machinists, toolroom technicians, and maintenance mechanics commonly reach for this style of tap in manual tapping, drill press, and CNC tapping operations alike.

Key Features

• M5x0.90 Metric Special thread form for non-standard metric applications
• 4-flute straight flute design suited for short-chipping materials
• Plug chamfer for gradual thread engagement in through and shallow blind holes
• High-speed steel construction provides good wear resistance across a range of materials
• D3 thread limit for close-tolerance threading work
• Right-hand thread, bright uncoated finish, no coolant-through requirement

Compatibility

Designed as a standard replacement or working tap for M5x0.90 Metric Special thread applications across general machining and maintenance operations.

Installation Notes

Tap installation and use should be performed by a qualified machinist or toolroom technician familiar with cutting tool practices. Ensure the workpiece is securely fixtured and the tap is properly aligned before engagement to avoid tap breakage. Use an appropriate cutting fluid or tapping compound for the workpiece material. Replace worn or chipped taps before use to maintain thread quality and avoid damage to the workpiece.