Scientific Cutting Tools SPTM488L Thread Mill 5/8-11 to 5/8-32

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM488L is a single profile thread mill designed to cut both internal and external threads across a wide range from 5/8-11 to 5/8-32 (11 to 32 TPI). Built from submicron-grade solid carbide, it delivers the rigidity and wear resistance required for precision threading operations in demanding shop environments. The tool features a 0.488-inch cutting diameter, a 1/2-inch shank, and a 3.5-inch overall length, making it well suited for CNC machining centers running helical thread interpolation cycles. Five flutes provide balanced cutting action and efficient chip evacuation. The bright/uncoated finish keeps the carbide substrate at the surface for maximum sharpness on non-ferrous and ferrous materials alike.

This thread mill is intended for use on CNC machining centers capable of three-axis helical interpolation. It covers a broad TPI range in a single tool, reducing the need for multiple taps or thread mills when working across different thread pitches within the 5/8-inch diameter family. Typical applications include threading bores and external bosses in aerospace, automotive, mold and die, and general machining environments. The 0.34-inch neck diameter and 1.35-inch neck length provide reach and clearance for both through and blind-hole threading operations.

Key Features

• Covers 5/8-11 to 5/8-32 thread range in a single tool - 11 to 32 TPI
• Cuts both internal and external threads with one tool
• Submicron-grade solid carbide construction for extended tool life
• Five flutes for balanced cutting and efficient chip evacuation
• 0.34-inch neck diameter and 1.35-inch neck length for clearance in deep or blind features
• Bright/uncoated finish suitable for a wide range of workpiece materials

Compatibility

Designed for use in CNC machining centers with helical thread interpolation capability and a standard 1/2-inch toolholder or collet chuck; suited for threading operations within the 5/8-11 to 5/8-32 thread size range on internal and external features.

Installation Notes

Installation and operation should be performed by a qualified machinist or CNC programmer familiar with thread mill interpolation cycles. Secure the 1/2-inch shank in a properly sized, balanced toolholder or precision collet chuck and verify runout before cutting. Program the correct helical interpolation path for the target thread pitch and diameter - do not attempt to use this tool as a standard end mill or tap. Follow the machine tool manufacturer and cutting tool manufacturer guidelines for feeds, speeds, and coolant strategy appropriate to the workpiece material.