Scientific Cutting Tools SPTM059 Thread Mill 56-80 Tpi

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM059 is a single profile thread mill designed to cut both internal and external threads in the #2-56 to #2-80 range, spanning 56 to 80 threads per inch (TPI). Built from submicron-grade solid carbide, this tool delivers the rigidity and wear resistance required for precision threading in small-diameter applications. With a cutting diameter of 0.059 inches, a neck diameter of 0.034 inches, and a 3-flute geometry, the SPTM059 is suited for machinists and CNC operators working in tight-tolerance environments where thread quality and tool life both matter.

This thread mill is used in CNC machining centers for small-fastener thread forms, typically in metalworking, aerospace, electronics, and instrumentation applications. Its single-profile design allows one tool to cover a range of thread pitches within the #2 size class, reducing tool-change frequency in production environments. The bright, uncoated finish makes it compatible with a wide range of workpiece materials. Installation and use require a CNC milling machine with appropriate thread-milling software or canned cycle support.

Key Features

• Cuts both internal and external threads from #2-56 to #2-80 (56 to 80 TPI) with a single tool
• Submicron-grade solid carbide construction for high rigidity and extended tool life
• 3-flute design balances chip evacuation with cutting stability at small diameters
• 0.059-inch cutting diameter and 0.034-inch neck diameter enable access in confined bores
• Bright, uncoated finish suitable for use across a broad range of workpiece materials
• 1/8-inch shank diameter fits standard collets and toolholders commonly found in CNC setups

Compatibility

Designed for use in CNC milling machines equipped with 1/8-inch collets or compatible toolholders, and suited for thread-milling operations in the #2-56 to #2-80 thread size range on both internal and external thread forms.

Installation Notes

Thread milling requires a CNC machine with helical interpolation capability and a thread-milling cycle configured in the control software. Secure the 1/8-inch shank in a clean, properly sized collet and verify runout before cutting. Always confirm spindle speed and feed rate are appropriate for the workpiece material and tool diameter before engaging the cut. Handle solid carbide tooling with care - avoid contact with hard surfaces during setup to prevent chipping.