Kennametal 1540519 Hand Tap 6-32 Unc Plug Hss 2-flute

Product Description

The KENNAMETAL 1540519 is a straight-flute hand tap designed for cutting internal 6-32 UNC threads in a wide range of materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this plug-chamfer tap is suited for through-hole and blind-hole tapping where manual or machine-assisted hand tapping is the specified method. It runs a right-hand thread direction, Class 3B fit, and H2 thread limit, making it appropriate for standard-tolerance threaded fastener applications. Overall length is 2 inches with a thread length of 0.688 inches and a shank diameter of 0.141 inches. Two flutes provide adequate chip clearance for the intended material range.

This tap is rated for use in cast iron and non-ferrous metals, covering common shop and field applications where 6-32 UNC internal threads are required. It fits into the Kennametal Series 5305 and 5303 product families, which cover standard straight-flute hand taps for general-purpose threading. Typical install scenarios include repair threading, fixture fabrication, and component assembly in machine shops, maintenance facilities, and production environments.

Key Features

• 6-32 UNC thread size with plug chamfer for easy thread starting
• Right-hand, Class 3B fit with H2 thread limit for standard tolerances
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Bright, uncoated finish - no coating buildup to affect thread tolerances
• 2-flute straight-flute geometry suited for cast iron and non-ferrous metal applications
• Compact 2-inch overall length for access in tighter workpiece configurations

Compatibility

Designed for use in cast iron and non-ferrous metal workpieces requiring 6-32 UNC internal threads; part of Kennametal Series 5305 and 5303.

Installation Notes

This tap is installed by machinists and maintenance technicians using a standard tap wrench or tapping fixture. Secure the workpiece firmly before tapping and apply cutting fluid appropriate for the base material to extend tool life and improve thread finish. Back the tap out periodically to break and clear chips, especially in blind holes. Do not force the tap if resistance increases unexpectedly, as high-speed steel is brittle under torsional overload.