Cleveland C60999 Spiral Point Tap 3/4-16 Unf Hss

Product Description

The CLEVELAND C60999 is a spiral point tap designed for through-hole threading in metalworking applications. Built from high speed steel with a bright finish, it cuts 3/4-16 UNF right-hand threads to a 3B class of fit. The plug chamfer provides a gradual lead-in for clean thread engagement from the start of the cut. With a thread length of 2.0 inches and an overall length of 4.25 inches, this tap is sized for use in a standard tap wrench, drill press, or CNC tapping attachment. Licensed machinists, tool-and-die workers, and maintenance technicians are the primary users of this tap.

This tap is suited for through-hole threading operations in both manual and machine tapping setups. The spiral point geometry pushes chips forward ahead of the tap, making it well-suited for production runs in through-holes where chip evacuation is critical. Recommended material applications include alloy steel, carbon steel, and aluminum. The H3 thread limit provides a controlled tolerance fit appropriate for standard 3B class thread gaging requirements.

Key Features

• Spiral point geometry pushes chips forward, ideal for through-hole threading
• High speed steel construction for durability across alloy steel, carbon steel, and aluminum
• Plug chamfer for progressive lead-in and smooth thread starting
• 3B class of fit with H3 thread limit for consistent tolerance control
• Bright finish with no coating for easy wear inspection
• Right-hand thread direction, 3 flutes, 16 threads per inch

Compatibility

Designed for through-hole threading applications requiring 3/4-16 UNF right-hand threads in alloy steel, carbon steel, and aluminum workpieces.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap wrench, tapping head, or CNC machine configured for the correct feed rate. Ensure the workpiece is securely fixtured and properly drilled to the correct tap drill diameter before threading. Use an appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Follow ANSI B94.9 standards and shop-specific tooling procedures when setting up tapping operations.