Cleveland C54740 Hand Tap 1/2-20 Unf Plug 3-flute Hss

Product Description

The CLEVELAND C54740 is a 1/2-20 UNF straight-flute hand tap designed for cutting internal threads in metalworking applications. Built from high speed steel (HSS) with a bright uncoated finish, this tap delivers consistent thread quality in both blind and through-hole configurations. The plug chamfer style features 3 flutes and a Class 3B fit with an H3 thread limit, making it suitable for close-tolerance threading work. Overall length is 3.375 inches, with a thread length of 0.94 inches. This is a right-hand tap from Cleveland's Series 1002 lineup, sized and ground to UNF standards.

This tap is suited for machine shops, maintenance facilities, and fabrication environments where precise internal threading is required. It handles blind hole and through-hole threading across a range of common metals. Rated material applications include alloy steel, aluminum, carbon steel, and free-machining stainless steel. The straight-flute design pushes chips back toward the entry, making it effective in through-hole threading scenarios. Machinists, toolmakers, and industrial maintenance technicians are the primary installers of this tool.

Key Features

• 1/2-20 UNF thread form, right-hand direction, Class 3B fit with H3 thread limit
• Plug chamfer style for general-purpose blind and through-hole threading
• 3-flute straight-flute geometry suited for through-hole applications
• High speed steel construction with bright uncoated finish for visual wear monitoring
• Compatible with alloy steel, aluminum, carbon steel, and free-machining stainless steel
• No coolant-through feature; suitable for use with conventional cutting fluids applied externally

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 1002 standard tap lineup.

Installation Notes

This tap is a hand or machine threading tool installed by machinists and toolmakers. Always secure the workpiece firmly and ensure proper alignment of the tap with the pilot hole before starting. Use an appropriate cutting fluid for the workpiece material to reduce tool wear and improve thread finish. Inspect the tap for wear or chipping before each use and replace if thread quality degrades.