Accupro T2644285 Spiral Flute Tap 8-32 2 Flute Hss

Product Description

The ACCUPRO T2644285 is a spiral flute tap designed for cutting 8-32 unified coarse threads in through-hole and blind-hole applications. Built from 3% vanadium high speed steel (HSS), it delivers greater wear resistance than standard M2 HSS taps, making it well-suited for production tapping in aluminum and other non-ferrous materials. The modified bottoming chamfer allows the tap to thread close to the bottom of a blind hole while still providing adequate lead-in guidance. With a 40-degree helix angle and right-hand spiral flute geometry, chips are ejected upward out of the hole, reducing the risk of chip packing and breakage.

This tap is intended for hand tapping and machine tapping operations in light manufacturing, maintenance, and repair environments. The 8-32 thread size is common in electrical enclosures, electronics assemblies, panel hardware, and light structural fastening. The modified bottoming style makes it a practical choice when thread depth requirements are close to the bottom of a drilled hole. It is appropriate for use in aluminum, which is listed as the primary material application in the manufacturer specifications.

Key Features

• 3% Vanadium HSS construction for improved wear resistance over standard HSS
• 40-degree right-hand spiral flute ejects chips upward out of blind holes
• Modified bottoming chamfer threads close to hole bottom with guided lead-in
• Bright/uncoated finish compatible with cutting fluids standard for aluminum
• H5 thread limit for controlled fit tolerance in precision fastening applications
• Right-hand thread direction matches standard 8-32 fastener specification

Compatibility

Designed for tapping 8-32 unified coarse threads in aluminum. Listed material application is aluminum per manufacturer specifications. No additional compatible model or system data was provided in the product input.

Installation Notes

This tap should be installed by machinists or maintenance technicians familiar with thread-cutting operations. Always use an appropriate cutting fluid or tapping compound when threading aluminum to reduce friction and extend tool life. Ensure the drilled hole diameter is correct for an 8-32 thread before tapping, and secure the workpiece firmly to prevent movement. Do not force the tap if resistance increases suddenly, as spiral flute taps in blind holes can break if chips are not cleared properly.