Hertel K008154AS Straight Flute Tap 6-32 Unc Bottoming Hss

Product Description

The HERTEL K008154AS is a straight flute bottoming tap designed for cutting right-hand internal threads in blind and through holes. Manufactured from high-speed steel with a bright/uncoated finish, it cuts 6-32 UNC threads with a bottoming chamfer that allows threading close to the bottom of a blind hole. The tap has an overall length of 2 inches, a thread length of 0.6875 inches (11/16 inches), and 3 flutes. Thread limit is H7, indicating a tolerance class suited for standard fit threaded assemblies. Machinists, tool-and-die makers, and maintenance technicians install this tap on manual tap handles, T-handle wrenches, or CNC tapping equipment.

This tap is used in production and maintenance applications where 6-32 UNC threads are required in ferrous and non-ferrous materials. Its straight flute geometry makes it well suited for through holes and short blind holes where chip evacuation can be managed manually or with compressed air. The bottoming chamfer makes it the preferred choice when threading depth must extend to within one or two threads of the hole bottom, a common requirement in sheet metal, light structural assemblies, and instrument enclosures.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• High-speed steel construction provides durability across a range of workpiece materials
• Bright/uncoated finish - suitable for general-purpose tapping with standard cutting fluids
• 3 straight flutes for chip clearance in through holes and short blind holes
• H7 thread limit for standard fit tolerance on 6-32 UNC threads
• Right-hand thread direction for conventional tapping operations

Compatibility

Designed as a direct-fit replacement for 6-32 UNC bottoming taps with an H7 thread limit and a 2-inch overall length; compatible with standard tap holders and collets sized for number 6 taps.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with tapping operations. Secure the workpiece and use the correct tap drill size for 6-32 UNC prior to tapping. Apply an appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Avoid excessive downward pressure, especially near the bottom of a blind hole, to prevent tap breakage.