Accupro T2640343 Spiral Point Tap 10-32 3 Flutes Hss

Product Description

The ACCUPRO T2640343 is a spiral point tap designed for cutting 10-32 unified fine threads in ferrous materials. It features a plug chamfer style with three flutes and is manufactured from 3% vanadium high speed steel, which provides improved wear resistance compared to standard M2 HSS. The bright finish indicates no coating is applied, making it suitable for use with cutting oil or water-soluble coolant. A right-hand thread direction and H3 thread limit produce a 2B class of fit, the standard tolerance for most threaded fastener applications. Licensed machinists and maintenance technicians use this tap in drill presses, CNC tapping machines, and hand tapping applications.

This tap is intended for threading through-holes in steels and similar materials where chip evacuation forward through the hole is practical. The spiral point geometry pushes chips ahead of the tap rather than packing them in the flutes, reducing the risk of tap breakage in production and repair environments. With an overall length of 2.375 inches and a thread length of approximately 0.63 inches (16 mm), it fits standard tap handles and collet-style holders sized for the 4.93 mm shank diameter. Typical applications include machine repair, fabrication shops, and production tapping of steel plate, structural members, and enclosures.

Key Features

• 10-32 unified fine thread form for standard fastener applications
• Spiral point geometry pushes chips forward, reducing clogging in through-hole tapping
• 3% vanadium high speed steel construction for enhanced edge retention in steel
• H3 thread limit produces 2B class of fit, meeting standard tolerance requirements
• Bright finish compatible with most cutting fluids and tapping compounds
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed as a standard replacement or production spiral point tap for through-hole tapping of steels where a 10-32 UNF 2B thread class and H3 limit are specified.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with tapping procedures. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 10-32 UNF before tapping. Apply an appropriate cutting fluid or tapping compound to extend tap life and improve thread quality. Do not force the tap if resistance increases unexpectedly, as this can result in tap breakage.