Cleveland C57246 Spiral Point Tap 3/4-10 Unc Hss

Product Description

The CLEVELAND C57246 is a 3/4-10 UNC spiral point tap designed for through-hole threading in metalworking applications. Built from high speed steel with a bright finish, it features a plug chamfer and a 3-flute spiral point geometry that pushes chips ahead of the cut, keeping the flutes clear during blind and through-hole operations. The H3 thread limit and Class 2B fit tolerance make it suitable for standard commercial thread applications. At 4.25 inches overall length with a 1.22-inch thread length, this tap is sized for typical machine tapping setups on drill presses, CNC machines, and tapping arms used by machinists and maintenance professionals.

The C57246 is intended for through-hole threading in alloy steel, carbon steel, and aluminum. Its right-hand thread direction and plug chamfer suit production and maintenance tapping where the tap enters a pre-drilled clearance hole and threads the full depth in a single pass. The Series 1011 designation places it within the Cleveland general-purpose tapping line commonly used in job shops and industrial maintenance environments.

Key Features

• 3/4-10 UNC thread size with H3 thread limit for Class 2B fit tolerance
• 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 provides gradual thread engagement and reduced torque startup
• Bright finish with no coolant-through requirement, suitable for standard cutting fluid application
• Right-hand thread direction, 3 flutes, Series 1011

Compatibility

Designed for through-hole threading in alloy steel, aluminum, and carbon steel workpieces requiring a 3/4-10 UNC Class 2B thread. Compatible with standard 3/4-inch tap holders and tapping chucks.

Installation Notes

Installation of this tap is performed by machinists or qualified maintenance technicians using a tapping arm, drill press, or CNC machining center equipped with a compatible tap holder. Ensure the workpiece is securely fixtured and the pre-drilled hole meets the recommended tap drill diameter for 3/4-10 UNC before beginning. Apply appropriate cutting fluid for the workpiece material to reduce heat and extend tool life. Never reverse-tap without full disengagement of the cutting flutes, and inspect the tap for wear or chip loading between uses.