Kennametal 1541621 Hand Tap 8-36 Unf Plug Rh Hss

Product Description

The KENNAMETAL 1541621 is a straight-flute hand tap designed for cutting 8-36 UNF internal threads in a right-hand direction. Built from high-speed steel with a bright uncoated finish, it delivers consistent thread geometry across a Class of Fit of 2B and 3B with a Thread Limit of H2. The plug chamfer configuration provides a gradual thread lead-in suited for through-hole and moderate depth blind-hole applications. Overall length is 2.13 inches with a thread length of 0.75 inches and a shank diameter of 0.168 inches. This tap is intended for use by machinists, toolroom technicians, and maintenance trade professionals performing precision hand-tapping operations.

The 1541621 is appropriate for use in cast iron and non-ferrous metals, making it a practical choice for general machining, maintenance, and repair work where 8-36 UNF threads are required. It is sold individually and fits into standard tap handle drivers compatible with its shank diameter. Typical applications include creating threaded fastener holes in light fixtures, instrument panels, small mechanical assemblies, and machine components where fine-pitch UNF threading is specified. This tap belongs to the KENNAMETAL Series 5305 and 5303 product families.

Key Features

• 8-36 UNF thread form with right-hand cutting direction and plug chamfer lead-in
• High-speed steel construction for durability across cast iron and non-ferrous metal workpieces
• Bright uncoated finish suitable for use with standard cutting fluids
• 4-flute straight-flute geometry for stable, controlled hand-tapping
• Class of Fit 2B and 3B coverage with H2 thread limit for consistent tolerance control
• Compact form factor at 2.13 inches OAL for use in confined or restricted-access areas

Compatibility

Designed for use in cast iron and non-ferrous metal workpieces requiring 8-36 UNF internal threads. Part of KENNAMETAL Series 5305 and 5303. Compatible with standard tap handles and T-handle drivers sized for a 0.168-inch shank diameter.

Installation Notes

Hand taps of this type are installed by machinists or maintenance technicians using a T-handle or adjustable tap wrench. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 8-36 UNF threads before beginning the tapping operation. Apply an appropriate cutting fluid for the workpiece material to reduce friction and extend tap life. Advance the tap with steady, even pressure and back off periodically to break chips and prevent tap breakage.