Hertel K029199AS M20x1.50 Straight Flute Tap Plug Hss

Product Description

The HERTEL K029199AS is a straight flute plug tap ground to Metric Fine thread standards for cutting M20 x 1.50 internal threads. It features four straight flutes and a plug chamfer lead, making it well suited for through-hole and blind-hole tapping in materials that produce short, broken chips. Manufactured from High Speed Steel with a bright, uncoated finish, this tap delivers consistent thread accuracy at a D6 thread limit. Overall length is 4-15/32 inches. Thread direction is left hand, so verify orientation requirements before ordering.

This tap is used in machine shop, maintenance, and production environments where Metric Fine left-hand internal threads are required. Left-hand taps are common in applications where reverse-thread fasteners prevent loosening due to rotational forces, such as spindle shafts, pedal axles, and rotating machinery components. The plug chamfer distributes the cutting load across several threads, making it appropriate for both CNC tapping operations and hand tapping with a tap wrench where rigidity allows.

Key Features

• M20 x 1.50 Metric Fine thread form for precise, fine-pitch internal threads
• Left-hand thread direction for reverse-thread applications
• Four straight flutes for chip control in short-chipping materials
• Plug chamfer lead distributes cutting load and aids thread entry
• D6 thread limit for consistent tolerance and fit
• High Speed Steel construction for general-purpose cutting performance
• Bright, uncoated finish for use with standard cutting fluids

Compatibility

Designed for use in any tapping application requiring a left-hand M20 x 1.50 Metric Fine internal thread. Suitable for CNC machining centers, drill presses, and manual tapping operations in ferrous and non-ferrous materials.

Installation Notes

A licensed machinist or trained toolroom technician should install and operate this tap in appropriate machine or hand-tapping equipment. Ensure the workpiece is securely fixtured and properly aligned before engaging the tap to prevent tap breakage. Use an appropriate cutting fluid for the workpiece material to extend tool life and maintain thread quality. Left-hand taps require counterclockwise rotation to cut, so confirm machine spindle direction or tap wrench operation before use.