Cleveland C56064 Hand Tap 1/4-28 Unf Plug Ticn Hss

Product Description

The CLEVELAND C56064 is a straight-flute hand tap designed for cutting 1/4-28 UNF threads in metalworking applications. Built from high speed steel with a titanium carbonitride (TiCN) coating, it delivers improved wear resistance and longer tool life compared to uncoated taps. The plug chamfer — typically 3 to 5 threads — makes it suitable for both through-hole and blind-hole threading. With a 4-flute design and H3 thread limit, this tap holds close tolerances and produces consistent 2B-class threads. Machinists, toolroom technicians, and maintenance professionals use this tap with standard tap wrenches or tapping machines in production and repair work.

This tap is designed for threading operations in cast iron, stainless steel, and steel. The plug chamfer suits starting in a pre-drilled hole where moderate thread engagement is acceptable. At 2.5 inches overall length with a 0.63-inch thread length, it fits standard tap handle chucks and tapping attachments used in bench work and machine setups. It is well-suited for both low-volume repair work and repetitive production threading on harder ferrous materials where a TiCN coating extends tool life.

Key Features

• TiCN coating increases surface hardness and lubricity for extended tool life in ferrous materials
• High speed steel construction provides toughness and re-sharpenability
• 4-flute straight-flute geometry produces clean threads in through-hole and blind-hole applications
• Plug chamfer (3-5 thread lead) allows easy thread starting
• H3 thread limit maintains 2B class-of-fit tolerances for standard fastener compatibility
• Right-hand thread direction matches standard UNF fastener conventions

Compatibility

Designed for cutting 1/4-28 UNF right-hand threads per the Series 1002TICN specification. Rated for use in cast iron, stainless steel, and steel workpieces. Not intended for non-ferrous or soft materials where flute geometry may be mismatched.

Installation Notes

A licensed machinist or trained technician should select the correct tap drill size per UNF standards before threading. Secure the workpiece before tapping and use a proper cutting fluid appropriate for the workpiece material — this is especially important for stainless steel to prevent galling. Apply steady, even pressure and back off periodically to break chips, particularly in blind-hole operations. Inspect the tap for wear or chipping before each use and do not force a tap that shows resistance, as breakage in the workpiece is difficult to recover.