Kennametal 1542914 Spiral Point Tap 3/4-10 Unc Hss

Product Description

The KENNAMETAL 1542914 is a spiral point tap designed for cutting right-hand internal threads in a range of metalworking applications. Built from high speed steel (HSS) with a bright, uncoated finish, this tap features a plug chamfer and three flutes, producing a 3/4-10 UNC thread form. The spiral point geometry pushes chips forward ahead of the cutting action, making it well suited for through-hole tapping operations. With an overall length of 4.25 inches and a thread length of 2.0 inches, the 1542914 is dimensioned for standard production and maintenance tapping in machine tool or hand-tapping setups. Coolant-through capability is not included. Thread limit is H3, indicating controlled oversize tolerance for use with standard UNC class fits.

This tap is intended for use in cast iron, ductile iron, and non-ferrous metals, making it a practical choice for job shops, maintenance facilities, and production environments where a reliable general-purpose spiral point tap is needed. The plug chamfer distributes cutting load across several leading threads, reducing entry stress and improving thread quality in through-hole applications. It is commonly used by machinists and maintenance technicians working with manual or CNC tapping equipment across light industrial and commercial settings.

Key Features

• Spiral point geometry pushes chips forward, optimizing through-hole tapping performance
• High speed steel construction provides durability across cast iron, ductile iron, and non-ferrous metal applications
• Plug chamfer for gradual thread engagement and reduced entry load
• H3 thread limit for controlled oversize tolerance compatible with standard UNC class fits
• Bright, uncoated finish suitable for use with cutting fluids or dry tapping depending on material
• Right-hand thread direction, 3/4-10 UNC thread form

Compatibility

Designed for cutting 3/4-10 UNC right-hand internal threads in cast iron, ductile iron, and non-ferrous metals. Part of the Kennametal Series 5301 spiral point tap line.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with tapping operations. Ensure the workpiece is properly secured and the spindle or tap holder is aligned to avoid thread deviation or tap breakage. Power down and de-energize any CNC or powered tapping equipment before changing tooling. Always use an appropriate cutting fluid for the material being tapped to extend tool life and maintain thread quality.