This series of miniature solid carbide thread mills are optimally designed for easy machining of difficult materials such as stainless steels, titanium, K-monel, hastelloy, and inconel. The line is suitable for a variety of applications including those in the medical industries. Due to their size and design, the thread mills can increase productivity in several ways. For maximum efficiency and cost savings, the thread mills eliminate the possibility and consequences of tap breakage. Thread mills are available in both 1 flute and 3 flute versions, with the latter being ideal for high volume output needs. They remove costly manual operations by eliminating the need for hand tapping during full bottom threading applications. Bottom threading can be performed to within 1 pitch. The miniature thread mills function highly efficiently with externally supplied coolant and eliminate the need for thread cutting oil, so parts and coolant reservoirs are not contaminated, as can be experienced when using a tapping method in difficult materials.