Kennametal 1541345 Spiral Point Tap 8-32 Unc Hss

Product Description

The KENNAMETAL 1541345 is a spiral point tap designed for cutting internal threads in through-hole applications. It produces an 8-32 UNC thread with a plug chamfer and a Class 2B fit tolerance, making it well suited for general-purpose fastener threads in production and maintenance environments. The tap is manufactured from high speed steel (HSS) with a bright, uncoated finish and carries an H3 thread limit for consistent dimensional control. At 2.125 inches overall length with a 0.75-inch thread length, it fits standard tap holders and is sized for use with a No. 29 drill. Right-hand cutting direction. No coolant-through feature.

This tap is intended for threading cast iron, ductile iron, and non-ferrous metals in light to medium production work. Typical applications include machine shops, maintenance facilities, and assembly operations where 8-32 UNC fasteners are common. The plug chamfer style requires a through-hole or adequate chip clearance, as the spiral point pushes chips forward ahead of the cutting edge rather than extracting them from the hole. It is well matched to CNC tapping, drill press tapping, and hand tapping operations where chip control and thread accuracy are priorities.

Key Features

• 8-32 UNC thread form with Class 2B fit for standard fastener thread tolerance
• Plug chamfer drives chips forward, suited for through-hole tapping
• H3 thread limit provides consistent oversize control for plated or coated fasteners
• High speed steel construction handles cast iron, ductile iron, and non-ferrous metals
• Bright uncoated finish maintains sharp cutting geometry for light-to-medium duty use
• Right-hand cutting, 2 flutes, fractional inch measurement

Compatibility

Designed as an OEM-style replacement or direct-use tap compatible with standard 8-32 UNC through-hole tapping applications in cast iron, ductile iron, and non-ferrous metal workpieces.

Installation Notes

This tap is installed by machinists and maintenance technicians using standard tap handles, tapping heads, or CNC rigid tapping cycles. Secure the workpiece and ensure the pilot hole is drilled to the correct size and is free of burrs before tapping. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Do not reverse the tap prematurely in blind holes, as this is a spiral point design intended for through-hole use.