Cleveland C55303 Spiral Point Tap 8-32 Unc Tin Hss

Product Description

The CLEVELAND C55303 is a spiral point tap designed for through-hole threading in metalworking applications. Built from high speed steel (HSS) with a titanium nitride (TiN) coating, it cuts 8-32 UNC threads with a plug chamfer and a 2-flute geometry that efficiently pushes chips ahead of the cutting edge. The H2 thread limit holds close tolerances for a 2B class of fit, making it suitable for production and repair threading where consistent thread form is required. Overall length is 2.125 inches, with a thread length of 0.38 inches and a shank diameter of 0.168 inches. Licensed machinists, maintenance technicians, and tool room operators are the typical users.

This tap is intended for through-hole threading operations in cast iron and steel workpieces. The spiral point design drives chips forward through the hole rather than packing them in the flutes, which makes it well suited for continuous production runs on drill presses, CNC machining centers, and tapping heads. It is appropriate for both shop and field repair work wherever 8-32 UNC fastener threads are required in metallic materials.

Key Features

• 8-32 UNC thread form with H2 thread limit for 2B class of fit tolerances
• High speed steel construction provides heat and wear resistance during machine tapping
• TiN coating reduces friction and extends tool life in cast iron and steel
• Spiral point geometry pushes chips forward, ideal for through-hole applications
• Plug chamfer with 2 flutes balances cutting load and chip clearance
• Right-hand thread direction; no coolant-through requirement

Compatibility

Designed for through-hole threading of cast iron and steel in applications requiring an 8-32 UNC, 2B class of fit thread. Part of the CLEVELAND Series 1011TN product line.

Installation Notes

Installation and use of this tap should be performed by qualified machinists or maintenance professionals familiar with tapping operations. Ensure the workpiece is securely fixtured and the spindle speed is set appropriately for the material and tap diameter before beginning. Use a suitable cutting fluid or tapping compound to reduce heat and extend tool life. Replace the tap if cutting resistance increases significantly or if thread form quality degrades.