Scientific Cutting Tools TM.450-16 Thread Mill 9/16-16

Product Description

The SCIENTIFIC CUTTING TOOLS TM.450-16 is a straight flute thread mill designed for cutting internal threads to a 9/16-16 UNS specification. Built from submicron-grade solid carbide, it delivers the rigidity and wear resistance required for precision threading operations on hardened and difficult-to-machine materials. The tool features 4 flutes, a 0.45 inch cutting diameter, and a 1.15 inch length of cut, making it well suited for through-hole and blind-hole internal thread milling on CNC machining centers. A bright finish is applied to the cutting surfaces. Licensed machinists and CNC programmers specify this tool for applications where tap breakage risk must be eliminated and thread quality must be held to tight tolerances.

This thread mill is intended for internal threading operations in production and job-shop environments. It is run on 3-axis or 3+2 CNC machining centers using helical interpolation cycles. Typical applications include threading bores in steel, stainless steel, aluminum, and cast materials where a 9/16-16 UNS internal thread is required. The 1/2 inch shank diameter suits standard ER or end-mill-style toolholders commonly found in machining center spindles. The 3.5 inch overall length provides clearance for most standard fixturing setups.

Key Features

• Straight flute geometry for internal 9/16-16 UNS thread milling
• Submicron-grade solid carbide construction for wear resistance and rigidity
• 4 flutes with 16 teeth per inch for consistent thread form
• 0.45 inch cutting diameter with 1.15 inch length of cut
• 1/2 inch shank diameter for compatibility with standard ER and end-mill toolholders
• Bright finish with no coating - suitable for use with external coolant or cutting fluid

Compatibility

Designed for use in CNC machining centers with 1/2 inch collet or end-mill-style toolholders for cutting internal 9/16-16 UNS threads via helical interpolation.

Installation Notes

Thread mills must be run on CNC equipment capable of helical interpolation - this tool is not compatible with manual or tapping-head setups. Ensure the toolholder is properly torqued to manufacturer specifications and that runout is minimized before cycling. Apply appropriate cutting fluid or coolant directed at the cutting zone; coolant-through is not available on this tool. Program the helical interpolation cycle to match the 9/16-16 thread pitch and confirm the entry and exit moves clear the bore wall to prevent tool deflection or chipping.