Cleveland C55216 Hand Tap 1/4-20 Unc Bottoming Tin Hss

Product Description

The CLEVELAND C55216 is a 1/4-20 UNC bottoming hand tap ground from high speed steel and coated with titanium nitride (TiN). It features a 4-flute straight flute geometry and a right-hand thread direction with a 3B class of fit and H3 thread limit. The TiN coating extends tool life by reducing friction and resisting wear during repeated threading operations. At 2.5 inches overall length with a 1-inch thread length, this tap is sized for standard hand-tapping work in general machining, maintenance, and fabrication environments. Machinists, tool-and-die technicians, and maintenance mechanics install this part in both shop and field settings.

The C55216 is suited for blind-hole and through-hole threading applications. Its bottoming chamfer design allows threads to be cut close to the bottom of a blind hole, making it the correct choice for any job where full thread depth near the hole floor is required. The tap performs across a range of common workpiece materials including alloy steel, carbon steel, aluminum, and free-machining stainless steel. It belongs to the CLEVELAND Series 1003TN, a line of TiN-coated hand taps designed for production and maintenance threading tasks.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• TiN coating reduces friction and extends service life across high-volume use
• 4-flute straight flute geometry provides chip clearance in through-hole and blind-hole applications
• H3 thread limit and 3B class of fit for standard tolerance threading
• Right-hand thread direction, 1/4-20 UNC
• Compatible with alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces

Compatibility

Designed for blind-hole and through-hole threading in alloy steel, aluminum, carbon steel, and free-machining stainless steel. Part of the CLEVELAND Series 1003TN.

Installation Notes

This tap is intended for use with a hand tap wrench or tapping fixture; secure the workpiece before threading. Always back the tap out periodically to break chips and clear the flutes, particularly in blind holes. Apply appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Follow shop safety procedures and inspect the tap for wear or chipping before each use.