Scientific Cutting Tools SPTM050L Thread Mill 64-80 Tpi

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM050L is a single profile thread mill designed to cut both internal and external threads in the 64 to 80 TPI range, covering thread sizes from 1-64 to 1-80. Constructed from submicron-grade solid carbide with a bright, uncoated finish, this tool delivers rigidity and wear resistance in small-diameter threading applications. It features a 0.05-inch cutting diameter, a 0.028-inch neck diameter, and a 0.15-inch neck length, making it well suited for fine-pitch, miniature thread work where dimensional accuracy is critical. With 3 flutes and a 1/8-inch shank, it is compatible with standard CNC machining centers and milling spindles.

This thread mill is intended for use in precision machining environments where both internal and external threads must be produced in a single tool setup. Typical applications include small fastener threads, instrument components, and miniature hardware in aerospace, medical device, and electronics manufacturing. The single-profile design allows one tool to cover the full 64 to 80 TPI range without a tool change, reducing setup time in multi-thread-size jobs. It is installed and operated by CNC machinists and tooling specialists working with small-diameter features.

Key Features

• Cuts both internal and external threads from 64 to 80 TPI with a single tool
• Submicron-grade solid carbide construction for rigidity in fine-pitch applications
• 0.05-inch cutting diameter suited for miniature and small-diameter thread forms
• 0.028-inch neck diameter and 0.15-inch neck length for access in tight bore profiles
• 3-flute geometry for chip clearance in both through and blind hole threading
• Bright, uncoated finish compatible with a range of cutting fluids and coolants

Compatibility

Designed for use with CNC milling machines and machining centers accepting a 1/8-inch shank diameter. Suitable for threading operations on thread sizes 1-64 through 1-80 in a variety of workpiece materials typical of precision machining applications.

Installation Notes

This tool is installed and run by qualified CNC machinists using appropriate toolholders sized for a 1/8-inch shank. Confirm runout at the spindle before engaging the cut, as small-diameter carbide tools are sensitive to excessive runout. Use manufacturer-recommended feeds, speeds, and cutting fluid for the workpiece material. Handle solid carbide tooling carefully to avoid chipping the cutting edges during setup and storage.