Hertel K008972AS Tap Set 10-32 Unf 4 Flute Hss

Product Description

The HERTEL K008972AS is a 3-piece tap set designed for cutting 10-32 UNF internal threads in metal workpieces. Built from high-speed steel (HSS) with a bright, uncoated finish, this set delivers reliable cutting performance across a range of ferrous and non-ferrous materials. The 4-flute geometry provides efficient chip evacuation and thread form accuracy. With an overall length of 2.375 inches and a Thread Limit of H2, the set is suited for precision threading applications in manufacturing, maintenance, and repair environments. Machinists, tool-and-die makers, and maintenance technicians are the primary users.

This tap set is used in applications requiring 10-32 UNF thread cutting in standard tapping operations. The set covers Class of Fit 2B and 3B, making it appropriate for both general-purpose and closer-tolerance threaded assemblies. Typical scenarios include tapping holes in metal enclosures, brackets, fixtures, and machine components where a fine unified thread is specified. The 4-flute design is best suited for shorter-chipping materials such as steel, aluminum, and brass in through-hole or blind-hole configurations.

Key Features

• 10-32 UNF thread form for fine-pitch unified threading
• High-speed steel construction for durability across ferrous and non-ferrous materials
• 4-flute geometry promotes clean chip evacuation and accurate thread form
• Bright, uncoated finish — suitable for use with standard cutting fluids
• Class of Fit 2B and 3B coverage for general and close-tolerance applications
• 3-piece set provides taper, plug, and bottoming tap options in one package

Compatibility

Designed for use in standard tapping operations requiring 10-32 UNF internal threads, compatible with hand-tapping equipment, tapping arms, and CNC tapping cycles that accept standard tap shanks.

Installation Notes

Tapping operations should be performed by qualified machinists or maintenance technicians following standard shop safety practices. Secure the workpiece firmly before tapping and ensure the tap is started perpendicular to the workpiece surface to avoid thread runout or tap breakage. Always apply an appropriate cutting fluid for the material being tapped. For blind holes, use the taper tap first to start the thread, then follow with the plug and bottoming taps as depth requires.