Kennametal 5416917 Spiral Point Tap 1/2-13 Unc Hss-e

Product Description

The KENNAMETAL 5416917 is a spiral point tap designed for through-hole threading in a wide range of metals. It cuts a 1/2-13 UNC right-hand thread to a 3B class of fit with an H3 thread limit. The tap is manufactured from HSS-E (high-speed steel with cobalt) and carries a dual TiCN and TiN coating for extended tool life and heat resistance. Three flutes with a plug chamfer provide efficient chip pushing ahead of the cut, making this tap well suited for production threading on through-hole applications. Overall length is 3.375 inches, thread length is 0.94 inches, and the part belongs to Kennametal Series T820.

This tap is used in through-hole threading operations on steel, stainless steel, cast iron, and non-ferrous metals. The plug chamfer provides a gradual lead-in, making it appropriate for both manual and CNC machine tapping where the workpiece allows chip ejection forward through the hole. It is a standard fractional inch tap commonly used in maintenance, repair, and manufacturing environments by machinists and tool-and-die tradespeople working to inch-standard UNC specifications.

Key Features

• 1/2-13 UNC thread form, right-hand cutting direction, 3B class of fit
• HSS-E construction with dual TiCN and TiN coating for heat and wear resistance
• Plug chamfer with 3 flutes for efficient chip pushing in through-hole applications
• H3 thread limit for consistent tolerance control in production threading
• Series T820 design with shank diameter of 0.367 inches and neck length of 0.800 inches
• Rated for steel, stainless steel, cast iron, and non-ferrous metal applications

Compatibility

Designed for through-hole threading in steel, stainless steel, cast iron, and non-ferrous metals. Compatible with standard 1/2-13 UNC tapping applications requiring a 3B class of fit and H3 thread limit per inch-standard fractional specifications.

Installation Notes

This tap should be installed and operated by a qualified machinist following standard tapping procedures. Always secure the workpiece and ensure the spindle or tap handle is properly aligned before engaging the tap. Power down or de-energize any CNC or machine tool before changing or inspecting the tap. Coolant-through capability is not available on this tap, so apply cutting fluid externally when threading harder materials to prevent heat buildup and premature wear.