Cleveland C55333 Spiral Point Tap 1/2-13 Unc Tin Hss

Product Description

The CLEVELAND C55333 is a spiral point tap designed for through-hole threading in metalworking applications. Built from high speed steel (HSS) with a titanium nitride (TiN) finish, this tap combines hardness with a low-friction coating that extends tool life in production environments. The 1/2-13 UNC thread profile and 3-flute spiral point geometry push chips forward ahead of the cutting zone, making it well suited for threading through holes without chip packing. The plug chamfer provides a standard lead-in for general tapping work across a range of materials.

This tap is rated for use in cast iron and steel and carries a Class 2B thread fit with an H5 thread limit, making it appropriate for standard tolerance threaded fastener applications. It is used in machine shops, maintenance and repair operations, and fabrication environments where 1/2-13 UNC threads are common. Right-hand cut, no coolant-through, suitable for both CNC tapping heads and hand tapping operations in appropriate setups.

Key Features

• Spiral point geometry pushes chips forward for clean through-hole threading
• TiN coating reduces friction and improves tool life in ferrous materials
• High speed steel construction handles cast iron and steel applications
• Plug chamfer provides standard lead-in for general-purpose tapping
• H5 thread limit and 2B class of fit meet common fastener tolerance requirements
• Right-hand cut, 1/2-13 UNC thread standard

Compatibility

Designed for through-hole threading in cast iron and steel workpieces requiring 1/2-13 UNC, Class 2B threaded features. Compatible with standard tapping chucks, CNC rigid tapping setups, and manual tapping handles sized for the 0.367-inch shank diameter.

Installation Notes

Tapping should be performed by a machinist or qualified tooling professional following established speeds and feeds for HSS taps in the target material. Ensure the workpiece is securely fixtured and the through-hole is properly drilled to the correct tap drill diameter for 1/2-13 UNC before beginning. Apply cutting fluid appropriate for the workpiece material to reduce heat and extend tap life. Inspect the tap for wear or chipping before each use and replace if cutting edges show degradation.