Cleveland C54235 Tap Set 6-40 Unf 3 Flute Hss

Product Description

The CLEVELAND C54235 is a 3-piece tap set designed for cutting 6-40 UNF internal threads in metal workpieces. The set includes bottoming, plug, and taper chamfer taps, allowing machinists and maintenance technicians to start, progress, and finish threads in a single operation. All three taps are ground from high speed steel (HSS) with a bright finish and feature 3 flutes for efficient chip evacuation. Overall length is 2 inches with a thread length of 0.38 inches. The right-hand thread direction and H2 thread limit make this set appropriate for standard UNF threading work in light manufacturing, maintenance, and toolroom environments.

This tap set is suited for threading 6-40 UNF holes in ferrous and non-ferrous metals, plastics, and similar machinable materials. The three-chamfer configuration — taper for starting alignment, plug for through holes, and bottoming for threading close to the base of blind holes — covers the full range of common threading scenarios. It fits manual hand-tap holders and standard tapping heads used on drill presses and mills. Typical applications include fastener hole preparation in sheet metal, instrument assemblies, and precision mechanical components where 6-40 UNF thread engagement is required.

Key Features

• 3-piece set includes bottoming, plug, and taper chamfer taps for complete threading operations
• High speed steel construction for durability across a range of machinable materials
• 3-flute design promotes chip clearance and reduces cutting resistance
• H2 thread limit for consistent, close-tolerance 6-40 UNF thread production
• Bright finish with no coating — suitable for use with cutting fluids
• Right-hand thread direction, compatible with standard tap holders and tapping heads

Compatibility

Designed for use in standard hand-tap holders and machine tapping heads that accept the shank dimensions of 6-40 UNF taps in the Series 1004 product line.

Installation Notes

Tapping operations should be performed by a machinist or qualified technician using a properly aligned tap holder to avoid tap breakage. Always apply an appropriate cutting fluid for the workpiece material before and during threading. Back off the tap periodically to break chips, particularly when using the bottoming tap in blind holes. Ensure the workpiece is securely clamped before starting the threading sequence.