Hertel K033004AS Spiral Flute Tap 8-32 Unc Hss Oxide

Product Description

The HERTEL K033004AS is a spiral flute tap designed for cutting 8-32 UNC internal threads in through-hole applications. Built from high-speed steel (HSS) with an oxide coating, this plug chamfer tap features three right-hand flutes with a 45-degree helix angle and fast flute style. The spiral geometry pulls chips up and out of the hole, making it well suited for tapping in materials where chip evacuation is a priority. Overall length is 2.125 inches. Thread limit is H3 with a 2B class of fit, consistent with standard commercial thread tolerance requirements.

This tap is used in machine shop, maintenance, and production environments where 8-32 UNC threads are required. It is appropriate for hand tapping or machine tapping operations on ferrous and non-ferrous metals, as well as some plastics. The plug chamfer provides a 3-to-5-thread lead-in, making it suitable for through-hole threading where a full-length thread start is not needed. Machinists, tool-and-die makers, and maintenance technicians commonly select this tap for general-purpose 8-32 thread repair and production work.

Key Features

• 8-32 UNC thread size with right-hand thread direction
• 3 spiral flutes with 45-degree helix angle for efficient chip evacuation
• Plug chamfer with fast flute style for through-hole applications
• High-speed steel construction for durability across a range of workpiece materials
• Oxide coating for moderate lubricity and corrosion resistance
• H3 thread limit, 2B class of fit for standard commercial thread tolerances

Compatibility

Designed as a standard spiral flute plug tap for 8-32 UNC through-hole threading operations in hand or machine tapping setups.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping head, or CNC machine tapping cycle. Secure the workpiece firmly before tapping, and use an appropriate cutting fluid for the material being threaded. Do not force the tap if resistance increases unexpectedly, as high-speed steel taps are susceptible to breakage under torsional overload. Inspect the tap for wear or chipping before each use.