Scientific Cutting Tools TM235-32A Thread Mill 5/16-32

Product Description

The SCIENTIFIC CUTTING TOOLS TM235-32A is a straight flute internal thread mill designed to cut 5/16-32 UNEF threads in a single helical pass. Built from submicron-grade solid carbide and finished with an AlTiN+ coating, it delivers consistent thread quality in ferrous and non-ferrous materials across high-cycle production environments. The tool runs on a 1/4 inch shank, measures 2.5 inches in overall length, and carries a 0.235 inch cutting diameter with a 0.669 inch length of cut. Three straight flutes provide clean chip evacuation in blind and through-hole applications. Licensed machinists and CNC operators install this tool in milling centers for precise internal thread generation.

This thread mill is suited for precision machining operations requiring UNEF internal threads at 5/16-32. Typical applications include aerospace, automotive, and industrial component manufacturing where thread tolerance and surface finish are critical. The tool is appropriate for CNC vertical and horizontal machining centers capable of helical interpolation. The straight flute geometry makes it a practical choice for short-chipping materials where staggered tooth designs are unnecessary. Coolant-through is not supported; flood or mist coolant applied externally is standard practice for this tool class.

Key Features

• 5/16-32 UNEF internal thread profile in a single helical pass
• Submicron-grade solid carbide substrate for extended tool life in hard materials
• AlTiN+ coating provides heat resistance and reduced friction at the cutting edge
• Three straight flutes for efficient chip evacuation in blind and through holes
• 1/4 inch shank diameter compatible with standard ER and end mill holders
• No coolant-through requirement simplifies setup on machines without internal coolant

Compatibility

Designed as an OEM-style thread mill for CNC machining centers capable of helical interpolation, accepting a 1/4 inch shank tool holder and programmed for 5/16-32 UNEF internal thread cycles.

Installation Notes

Installation is performed by qualified CNC machinists or tooling setup technicians. Secure the 1/4 inch shank in a properly sized collet or end mill holder and verify runout before cutting. Program the machining center for helical interpolation using the 0.235 inch cutting diameter and 32 TPI pitch values provided by the manufacturer. Do not use this tool in manual milling operations or in machines that do not support helical interpolation, as improper motion will damage the thread form and the tool.