Kennametal 5455844 Spiral Point Tap 6-32 Unc Hss-e Oxide

Product Description

The KENNAMETAL 5455844 is a spiral point tap designed for through-hole threading in ferrous materials. Built from High-Speed Steel-E (HSS-E) with an oxide coating, this tap handles 6-32 UNC threads at 32 threads per inch with a plug chamfer entry. The spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole applications where chip evacuation is critical. It carries a right-hand thread direction, an H6 thread limit for controlled fit tolerance, and belongs to the Kennametal T820 series. Licensed machinists, tool-and-die makers, and maintenance mechanics rely on this tap for consistent thread quality in production and repair operations.

This tap is engineered for through-hole threading in steel, stainless steel, and cast iron. The 6-32 UNC designation makes it a common choice for instrument panels, electrical enclosures, and light mechanical assemblies where small machine screw fasteners are standard. The plug chamfer provides a gradual cutting lead, balancing ease of starting with thread length engagement. The HSS-E base material offers improved toughness and edge retention compared to standard M2 HSS, extending tool life in abrasive or interrupted-cut conditions. Overall length is 1.99 inches, keeping it compatible with standard tap holders and collet chucks used in both manual and CNC tapping operations.

Key Features

• Spiral point geometry pushes chips forward for clean through-hole threading
• HSS-E material grade (KSP39) provides enhanced toughness and wear resistance over standard HSS
• Oxide coating reduces friction and improves lubrication retention during tapping
• H6 thread limit ensures controlled oversize tolerance for consistent fit
• Plug chamfer for balanced starting ease and full thread engagement
• Right-hand cut, 2-flute design suitable for steel, stainless steel, and cast iron

Compatibility

Designed for through-hole threading in steel, stainless steel, and cast iron workpieces. Fits standard tap holders, collet chucks, and tapping heads sized for a 0.141-inch shank diameter.

Installation Notes

This tap is intended for use by qualified machinists or maintenance mechanics operating drill presses, machining centers, or manual tapping equipment. Ensure the workpiece is securely fixtured and the pilot hole diameter is correct for 6-32 UNC before tapping. Apply appropriate cutting fluid for the material being threaded; use tapping fluid rated for stainless steel when working in that material. Never reverse a spiral point tap under power without confirming the tapping head or CNC cycle is configured for proper retract to avoid tap breakage.