Hertel K008288AS Spiral Flute Tap 10-32 Unf 3 Flutes Hss

Product Description

The HERTEL K008288AS is a spiral flute tap designed for cutting internal threads in steel, cast iron, aluminum, and similar workpiece materials. It produces a 10-32 UNF right-hand thread with a plug chamfer, which provides a gradual lead-in suitable for through-hole and most blind-hole applications. The tap is manufactured from high-speed steel (HSS) and carries a Thread Limit of H3, indicating a tolerance suited for standard 2B class-of-fit threads. The fast flute style and 52-degree helix angle evacuate chips efficiently upward out of the hole, reducing the risk of chip packing in short blind holes. Overall length is 2.375 inches.

This tap is intended for use in machine tapping operations on CNC machining centers, drill presses, and tapping heads, as well as hand tapping where thread quality and chip control are priorities. The 10-32 UNF thread form is common in precision assemblies, electronic enclosures, instrumentation panels, and light mechanical hardware. It is suited for production threading in job shops, maintenance and repair operations, and fabrication environments requiring consistent 2B tolerance threads.

Key Features

• Spiral flute design with 52-degree helix angle for efficient upward chip evacuation
• Plug chamfer provides gradual thread engagement, suitable for through holes and shallow blind holes
• H3 thread limit calibrated for standard 2B class-of-fit tolerance
• High-speed steel construction for durability across a range of workpiece materials
• Right-hand thread direction on both flute and thread form
• Compact 2.375-inch overall length fits standard tapping chucks and collet holders

Compatibility

Designed as a standard-shank spiral flute tap compatible with machine tapping chucks, floating tap holders, and collet-style tool holders accepting the shank dimensions of a 10-32 UNF tap.

Installation Notes

Installation should be performed by a machinist or maintenance technician familiar with tapping operations and cutting tool safety. Ensure the workpiece is securely clamped and properly drilled to the correct tap drill diameter before threading. Use an appropriate cutting fluid or tapping oil for the workpiece material to extend tool life and improve thread finish. When tapping blind holes, verify hole depth provides adequate clearance beyond the threaded depth to accommodate the tap chamfer and prevent bottoming out under power.