Cleveland C57024 Spiral Point Tap 1-72 Unf Plug Hss

Product Description

The CLEVELAND C57024 is a spiral point tap designed for through-hole threading in metal workpieces. It cuts a 1-72 UNF internal thread with a plug chamfer that progressively engages the workpiece, pushing chips forward ahead of the cutting edges to keep the flutes clear. Ground to an H2 thread limit with a 2B class of fit, it delivers consistent thread tolerance for standard fastener assemblies. The two-flute geometry in high-speed steel suits moderate-speed tapping operations on a range of ferrous and non-ferrous materials. The bright uncoated finish keeps surface friction low on compatible materials without the added cost of a coating.

This tap is suited for through-hole applications in alloy steel, carbon steel, and aluminum. It is commonly used in general machining, assembly, and maintenance environments where 1-72 UNF threads are required in thin or shallow workpieces. At 1.688 inches overall length with a 0.375 inch thread length, it fits standard tap handles and machine collets sized for its 0.141 inch shank diameter. Right-hand thread direction matches standard clockwise-drive tooling.

Key Features

• Spiral point geometry pushes chips forward, keeping flutes clear during through-hole tapping
• H2 thread limit and 2B class of fit for consistent, inspection-ready thread tolerances
• High-speed steel construction handles alloy steel, carbon steel, and aluminum
• Bright uncoated finish suitable for use with standard cutting fluids
• Right-hand cut compatible with standard tap wrenches and machine tap holders
• Compact 1.688 inch OAL fits tight-clearance fixturing setups

Compatibility

Designed for through-hole threading applications requiring a 1-72 UNF, 2B class of fit thread in alloy steel, carbon steel, or aluminum workpieces. Compatible with standard tap handles and machine holders accepting a 0.141 inch shank diameter.

Installation Notes

This tap is installed by a machinist or maintenance technician using a standard tap wrench or machine tapping head. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct diameter for a 1-72 UNF thread before tapping. Apply an appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Back the tap out periodically to break chips when tapping deeper holes, even in through-hole applications.