Cleveland C55338 Spiral Point Tap 3/4-10 Unc Hss Tin

Product Description

The CLEVELAND C55338 is a spiral point tap designed for through-hole threading in metal workpieces. It cuts a 3/4-10 UNC right-hand thread and is manufactured from high speed steel with a titanium nitride (TiN) coating for improved wear resistance and tool life. The plug chamfer eases entry into drilled holes. With a 2B class of fit and H3 thread limit, this tap meets standard tolerance requirements for general-purpose threaded fastener applications. It features 3 flutes and an overall length of 4.25 inches, with a thread length of 1.22 inches. Machinists and maintenance professionals use this tap in manual and CNC tapping operations.

The C55338 is suited for through-hole threading in alloy steel, carbon steel, and aluminum. It is a common choice in production machining, job shop work, and industrial maintenance environments where a reliable, standard-tolerance UNC thread is required. The spiral point geometry pushes chips forward through the hole, making it well suited for through-hole applications where chip evacuation is a priority.

Key Features

• 3/4-10 UNC thread form with right-hand cutting direction
• High speed steel construction for durability in ferrous and non-ferrous materials
• TiN coating extends tool life and reduces friction during cutting
• Plug chamfer provides smooth entry and consistent thread start
• H3 thread limit and 2B class of fit for standard general-purpose tolerance
• Spiral point geometry promotes forward chip ejection in through-hole applications

Compatibility

Designed for through-hole threading in alloy steel, aluminum, and carbon steel workpieces requiring a 3/4-10 UNC 2B thread. Part of the Cleveland Series 1011TN product line.

Installation Notes

This tap is installed by machinists and maintenance mechanics using a tap wrench, tapping head, or CNC rigid tapping cycle. Always ensure the tap is properly aligned with the drilled hole before applying cutting pressure to avoid tap breakage. Use an appropriate cutting fluid for the workpiece material to improve finish and extend tool life. Secure the workpiece firmly before beginning the tapping operation.