Our UN Multitooth Straight Flute Coolant-Through Thread Mills are built for precision and performance, with options in Solid Carbide and Carbide Tipped. Both feature internal coolant channels for improved chip evacuation and heat control. The solid carbide version offers maximum rigidity and wear resistance for high-speed, tight-tolerance threading. The carbide tipped option provides a cost-effective solution with durable performance for general-purpose applications. Ideal for cutting UNC, UNF, UNEF, UNS, and UNJ (internal) threads, these tools deliver fast, reliable results in tough and plated materials.