Kennametal 1542884 Hand Tap 9/16-12 Unc Bottoming Hss

Product Description

The KENNAMETAL 1542884 is a 9/16-12 UNC bottoming hand tap designed for threading operations that require threads cut close to the bottom of a blind hole. Manufactured from high-speed steel with a bright, uncoated finish, this tap features a 4-flute straight flute design and a right-hand thread direction. It measures 3.59 inches overall length with a 1.656-inch thread length and a 0.429-inch shank diameter. The H3 thread limit designation indicates a tight tolerance class suitable for producing consistent, accurate threads. Machinists, tool-and-die makers, and maintenance technicians use this tap in hand tapping applications and light machine tapping setups.

This tap is rated for use in cast iron and non-ferrous metals, making it appropriate for general metalworking, maintenance and repair operations, and production threading tasks. The bottoming chamfer allows threading to within 1 to 2 threads of the bottom of a blind hole, which is critical when full thread engagement depth is required by the application. It carries the KENNAMETAL Series 5305 and 5303 designation and is sold individually.

Key Features

• Bottoming chamfer for threading close to the floor of blind holes
• High-speed steel construction for durability in cast iron and non-ferrous metal applications
• Bright, uncoated finish with no coolant-through requirement
• H3 thread limit for consistent tolerance control
• 4-flute straight flute design for chip management in through and blind holes
• Right-hand thread direction, 9/16-12 UNC

Compatibility

Designed for use in cast iron and non-ferrous metal workpieces requiring 9/16-12 UNC internal threads. Part of KENNAMETAL Series 5305 and 5303.

Installation Notes

Hand taps should be installed by qualified machinists or maintenance technicians familiar with threading tool practices. Always ensure the workpiece is securely fixtured and the hole is properly drilled and chamfered to the correct tap drill size before tapping. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Back the tap off periodically to break chips when tapping blind holes.