Carmex Thread Mills Carbide Drill Mill - Metric - M4 x 0.7 - MT7Meet the Carmex Thread Mills Carbide Drill Mill for metric M4 x 0. 7 threadsa precision tool engineered to drill, chamfer, and thread mill in a single, efficient pass. Built for highvolume production, it delivers consistent thread quality with fewer tool changes. Combination operation: drills, chamfers, and thread mills in one pass to cut cycle times and boost throughput. Two fluted geometry: optimized for stable chip evacuation and smooth cutting