Hertel K011067AS Spiral Point Tap 1/4-20 Unc 2 Flutes

Product Description

The HERTEL K011067AS is a spiral point tap designed to cut clean internal threads in through-hole applications. Built from high-speed steel with a bright uncoated finish, it is ground to a 1/4-20 UNC thread form with a plug chamfer and a 2-flute spiral point geometry. The spiral point pushes chips forward ahead of the cutting zone, making it well suited for through-hole tapping at production volumes. The H6 thread limit provides a controlled tolerance for standard-fit assemblies. Thread length is 1 inch with right-hand thread direction. Machinists and maintenance technicians rely on this tap for reliable threading in steel, aluminum, and similar machinable materials.

This tap is used in general metalworking, maintenance and repair operations, and light manufacturing where 1/4-20 UNC threads are required in through-hole configurations. The plug chamfer makes it appropriate for starting in a pre-drilled through hole without the need for a bottoming tap. It is commonly used in manual tapping, drill press setups, and CNC tapping operations where spiral point geometry is preferred over spiral flute designs.

Key Features

• 1/4-20 UNC thread form for standard inch-series through-hole tapping
• High-speed steel construction for durability across a range of machinable metals
• Plug chamfer for easy starting in through-hole applications
• Spiral point geometry pushes chips forward, reducing chip packing in through holes
• H6 thread limit for controlled fit in standard-tolerance assemblies
• Bright uncoated finish suitable for use with standard cutting fluids

Compatibility

Designed as an OEM-style replacement spiral point tap for standard 1/4-20 UNC through-hole tapping applications in general metalworking and MRO environments.

Installation Notes

This tap is installed by machinists and maintenance technicians using a tap wrench, tapping head, or CNC spindle. Always use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Ensure the workpiece is securely clamped before tapping and that the correct drill size for a 1/4-20 UNC thread is used in the pre-drilled hole. Follow applicable shop safety procedures when operating tapping equipment.