Hertel K008278AS Spiral Point Tap 10-32 Unf 2 Flute Hss

Product Description

The HERTEL K008278AS is a spiral point tap designed for cutting 10-32 UNF internal threads in through-hole applications. It features a plug chamfer, two flutes, and a bright uncoated finish on a high-speed steel body. The spiral point geometry pushes chips forward ahead of the cutting action, making it well-suited for through-hole tapping at production rates. The H1 thread limit provides a tight tolerance fit for standard UNF thread classes. With a shank diameter of 0.194 inches, it fits standard tap holders and chucks used in manual and machine tapping operations. Licensed machinists, toolmakers, and maintenance technicians are the primary users.

This tap is used in machine shops, maintenance facilities, and production environments where 10-32 UNF through-hole threads are required. Common applications include tapping steel, aluminum, brass, and similar materials at low-to-moderate hardness levels. The plug chamfer style requires a clear path through the workpiece for chip evacuation, making it appropriate for through-hole work rather than blind-hole applications. It is suitable for both hand tapping and machine tapping setups.

Key Features

• Spiral point geometry pushes chips forward, ideal for through-hole tapping
• High-speed steel construction provides durability across a range of workpiece materials
• H1 thread limit for tight tolerance 10-32 UNF threads
• Plug chamfer style for standard through-hole entry and chip clearance
• Bright uncoated finish suitable for general-purpose tapping applications
• Right-hand thread direction, 2-flute design

Compatibility

Designed as a standard-shank spiral point tap compatible with 10-32 UNF through-hole tapping operations using any tap wrench, T-handle, or machine tap holder accepting a 0.194-inch shank diameter.

Installation Notes

Secure the workpiece firmly before tapping and ensure the pilot hole is drilled to the correct tap drill diameter for 10-32 UNF threads per standard drill charts. Use appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. For machine tapping, verify spindle speed and feed rate are matched to the tap diameter and material being cut. Never reverse a spiral point tap in a blind hole, as this design is intended exclusively for through-hole applications.