Scientific Cutting Tools Tm 490-16 Thread Mill 5/8-16

Product Description

The SCIENTIFIC CUTTING TOOLS TM 490-16 is a straight flute thread mill designed for cutting internal 5/8-16 UNS threads in a CNC machining center. Built from submicron-grade solid carbide, it delivers the rigidity and wear resistance needed for consistent thread form in production environments. The tool features a 0.49-inch cutting diameter, 1.03-inch length of cut, and a bright finish. Six straight flutes provide stable chip evacuation during helical interpolation passes. Machinists and tooling specialists working in aerospace, automotive, and general manufacturing use this mill where tapping is impractical or where thread quality must be tightly controlled.

This thread mill is suited for internal thread milling applications on CNC machining centers capable of helical interpolation. The 5/8-16 UNS thread specification makes it applicable to precision fastener bores and fluid fittings in medium-to-heavy duty assemblies. The 1/2-inch shank seats in standard end mill holders, collet chucks, or shrink-fit toolholders. With a 3.5-inch overall length, it reaches typical workpiece depths without requiring extended-reach holders in most setups.

Key Features

• Submicron-grade solid carbide construction for extended tool life in ferrous and non-ferrous materials
• 6 straight flutes for stable cutting action and consistent chip flow
• 5/8-16 UNS internal thread profile with 16 TPI
• Bright finish with no coolant-through requirement, compatible with flood coolant from the outside
• 1/2-inch shank fits standard end mill holders and collet chucks
• Non-staggered tooth geometry for straightforward helical interpolation programming

Compatibility

Designed as an OEM-style thread milling solution for CNC machining centers capable of helical interpolation, suitable for cutting 5/8-16 UNS internal threads in a range of workpiece materials.

Installation Notes

Thread mills are installed and operated by machinists or CNC tooling specialists on 3-axis or higher machining centers. Secure the 1/2-inch shank in a properly torqued end mill holder or collet chuck before operation. Program the toolpath using helical interpolation with the correct thread lead and direction for the target thread hand. Verify spindle speed, feed rate, and radial stepover against the manufacturer cutting data for the specific workpiece material before running the first part.