Industrial MTS0312C8716UNMT7 Solid Carbide Thread Mill

Carmex MTS0312C8716UNMT7 Solid Carbide Thread Mill is a compact, coolantless tool engineered to mill internal threads in metal workpieces. It targets Unified internal threads of size 3/8-16 UNF and supports both right- and left-handed variants, enabling threading in tight spaces without a separate tapping operation. The tool sports a 0.312 in (7.92 mm) shank, an overall length of 2.5 in (64.0 mm), and a neck length of 0.87 in (22.1 mm), with a cutting diameter of 0.264 in (6.7 mm). It uses three flutes to balance chip evacuation and rigidity for precise thread generation, and it is manufactured from MT7 solid carbide, a high-hardness grade chosen for stability and wear resistance in demanding milling conditions. The MTS0312C8716UNMT7 carries a 16 TPI (UNF) pitch, aligning with standard 3/8-16 UNF internal threads. Designed for offline milling in machines with limited clearance, this tool excels at producing accurate internal threads in a single operation, reducing setup steps and improving repeatability. Its combination of short length, robust carbide grade, and a moderate cutting diameter makes it suited for pocketed or recessed features where clean thread profiles and consistent tolerances matter most in assemblies that require precise internal fasteners.