Kennametal 1542089 Spiral Point Tap 10-32 Unf Hss

Product Description

The KENNAMETAL 1542089 is a spiral point tap designed for cutting right-hand internal threads to a 10-32 UNF specification. Built from high speed steel with a bright, uncoated finish, it features a plug chamfer that guides the tap into the workpiece progressively, distributing cutting load across multiple leading threads. The H2 thread limit and 3B class of fit make it well suited for standard tolerance threaded assemblies. With a 2-flute geometry, chips are pushed forward ahead of the tap, making this tool particularly effective in through-hole applications where chip evacuation is a priority.

This tap is intended for use in through-hole threading operations on cast iron, ductile iron, and non-ferrous metals. The spiral point design is common in production and maintenance environments where speed and consistent thread quality matter. At 2.38 inches overall length with a 0.875-inch thread length and a shank diameter of 0.194 inches, it fits standard tap holders and chuck-style holders used in drill presses, CNC machining centers, and hand tapping operations. It is part of the KENNAMETAL Series 5301 line.

Key Features

• Spiral point geometry pushes chips forward for efficient through-hole thread cutting
• High speed steel construction provides toughness across a range of workpiece hardnesses
• Plug chamfer distributes cutting load across the leading threads for controlled entry
• H2 thread limit and 3B class of fit meet standard tolerance requirements for general fastener assemblies
• Bright, uncoated finish for compatibility with a wide range of cutting fluids
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed for threading cast iron, ductile iron, and non-ferrous metal workpieces to 10-32 UNF, 3B class of fit in through-hole applications. Compatible with standard tap holders sized for a 0.194-inch shank diameter.

Installation Notes

This tap should be installed and operated by a machinist or qualified mechanical technician. Always secure the workpiece and confirm the tap holder is properly aligned before engaging the thread. Use an appropriate cutting fluid for the workpiece material to reduce friction and extend tool life. Never reverse a spiral point tap under load without disengaging the drive, as this can cause tap breakage in blind or shallow holes.