Scientific Cutting Tools SPTM488LA Thread Mill 5/8-11 to 5/8-32

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM488LA is a single profile thread mill designed for cutting internal and external threads ranging from 5/8-11 to 5/8-32, covering 11 to 32 TPI. Built from submicron-grade solid carbide and finished with an AlTiN+ coating, it delivers heat resistance and edge durability in demanding threading operations. The cutting diameter is 0.488 inches, the shank diameter is 0.5 inches, and the overall length is 3.5 inches. This tool is installed and operated by machinists and CNC programmers working in precision machining environments where a single tool must handle a broad thread-pitch range without tool changes.

This thread mill is suited for both job shop and production machining applications where threading flexibility is a priority. The 5-flute geometry promotes chip evacuation and stable cutting action across a range of workpiece materials. Its ability to cut both internal and external threads makes it practical for fixture work, aerospace components, fluid system fittings, and other precision-threaded parts. The neck diameter of 0.34 inches and neck length of 1.35 inches allow access to moderately deep thread features without clearance issues.

Key Features

• Cuts internal and external threads from 5/8-11 to 5/8-32 with a single tool
• Submicron-grade solid carbide construction for rigidity and wear resistance
• AlTiN+ coating provides thermal and oxidation resistance at elevated cutting speeds
• 5-flute design for balanced chip load and smooth thread finish
• 0.34-inch neck diameter with 1.35-inch neck length for reach into recessed features
• 1.35-inch length of cut accommodates typical thread depth requirements in the covered size range

Compatibility

Designed for use in CNC machining centers capable of helical interpolation for thread milling operations on workpieces requiring 5/8-11 to 5/8-32 internal or external threads, with a 0.5-inch straight shank for standard tool holder collets and end mill holders.

Installation Notes

Thread milling requires a CNC control with helical interpolation capability; confirm program compatibility before setup. Secure the 0.5-inch shank in a balanced, properly torqued collet or end mill holder per the machine tool manufacturer's specifications. Verify spindle runout is within acceptable limits before cutting, as excess runout degrades thread form accuracy. Follow the tool manufacturer's recommended feed and speed parameters for the workpiece material and coating type.