Cleveland C55421 Spiral Point Tap M12 X 1.75 Ticn Hss

Product Description

The CLEVELAND C55421 is a spiral point tap designed for through-hole threading in metalworking applications. It cuts an M12 x 1.75 thread profile to a 2B class of fit and carries a D6 thread limit, making it suitable for work where dimensional consistency is required. The tap is manufactured from high speed steel (HSS) and coated with titanium carbonitride (TiCN), which increases surface hardness and wear resistance for extended tool life in demanding materials. With 3 flutes and a plug chamfer, it is suited for production threading in through-hole applications where chips can advance ahead of the cutting edge. Licensed machinists and tool-and-die professionals are the typical users of this tap.

This tap is built for through-hole threading in cast iron, stainless steel, and carbon steel workpieces. The plug chamfer distributes the cutting load across several leading threads, making it well-suited for both machine tapping and CNC applications. The right-hand thread direction follows standard M12 x 1.75 specifications. It is part of Cleveland's Series 1011TICN, a line of TiCN-coated HSS spiral point taps. Typical applications include job shop production, maintenance and repair operations, and manufacturing environments where consistent M12 thread quality is required across multiple parts.

Key Features

• M12 x 1.75 thread size with 2B class of fit and D6 thread limit for precise dimensional control
• TiCN coating increases surface hardness and extends tool life compared to uncoated HSS taps
• Plug chamfer (3-5 thread lead) distributes cutting load and eases entry in through-hole applications
• 3-flute spiral point geometry pushes chips forward ahead of the tap, reducing chip packing
• Compatible with cast iron, stainless steel, and carbon steel workpieces
• Right-hand thread direction; no coolant-through feature required for standard applications

Compatibility

Designed for through-hole threading of M12 x 1.75 threads in cast iron, stainless steel, and steel. Suitable for use in manual tapping handles, drill press setups, and CNC machining centers configured for rigid or floating tap holders.

Installation Notes

Installation of this tap should be performed by a qualified machinist following standard tapping procedures. Ensure the workpiece is securely fixtured and the spindle or tap handle is properly aligned to the drilled hole before beginning the threading operation. Use an appropriate cutting fluid or tapping compound recommended for the workpiece material, particularly when tapping stainless steel, to prevent galling and premature tool wear. Inspect the tap for wear or chipping before each use and replace if cutting edges show signs of damage.