Cleveland C57112 Spiral Point Tap 12-24 Unc 2 Flute Hss

Product Description

The CLEVELAND C57112 is a spiral point tap designed for through-hole threading operations in machining and fabrication applications. Built from high-speed steel with a bright uncoated finish, this tap cuts a 12-24 UNC thread profile with a plug chamfer and an H3 thread limit. The spiral point geometry pushes chips forward ahead of the cutting teeth, making it well-suited for threading through-holes where chip evacuation is a priority. The overall length is 2.375 inches with a thread length of 0.5 inches. It carries a 2B/3B class of fit, covering the most common tolerance ranges for general-purpose fastener assemblies.

This tap is intended for use in production and maintenance shops where 12-24 UNC threaded holes are required in ferrous and non-ferrous materials. Rated material applications include alloy steel, carbon steel, and aluminum. The right-hand thread direction and plug chamfer make it a standard choice for CNC tapping cycles, drill press setups, and hand tapping on through-hole workpieces. Its compact shank diameter of 0.22 inches fits standard tap holders and chucks used in light to medium machining work.

Key Features

• Spiral point geometry pushes chips forward, optimizing through-hole tapping performance
• High-speed steel construction provides wear resistance across alloy steel, carbon steel, and aluminum
• Plug chamfer provides a gradual thread entry suitable for most general-purpose through-hole applications
• H3 thread limit and 2B/3B class of fit meet standard tolerance requirements for fastener assemblies
• Bright uncoated finish allows direct visual inspection of cutting edge condition
• Right-hand thread direction compatible with standard tapping attachments and CNC rigid tapping

Compatibility

Designed for through-hole threading in alloy steel, carbon steel, and aluminum workpieces requiring a 12-24 UNC thread profile with a 2B or 3B class of fit.

Installation Notes

A licensed machinist or qualified fabricator should secure the tap in an appropriate tap holder, tapping chuck, or CNC spindle before use. Ensure the workpiece is firmly fixtured and that the pilot hole diameter is correct for a 12-24 UNC tap prior to starting the thread. Apply a suitable cutting fluid for the workpiece material to extend tap life and reduce the risk of breakage. Never reverse the tap under power without confirming the tapping attachment supports reversing operation.