Technical Description of productsInformation 17. Bar diameter for external threads (for cutting type dies) Outside diameter of external thread Bar diameter Size Current JIS Old JIS Max. Min. Max. Min. Current JIS Old JIS M70X2 69.962 69.682 69.940 69.640 69.8 69.7 M70X1.5 69.968 69.732 69.950 69.700 69.79 69.76 M72X6 71.920 71.320 71.920 71.320 71.5 71.5 M72X4 71.940 71.465 71.940 71.465 71.6 71.6 M72X3 71.952 71.577 71.952 71.577 71.7 71.7 M72X2 71.962 71.682 71.940 71.640 71.8 71.7 M72X1.5 71.968 71.732 71.950 71.700 71.79 71.76 ※2 M75X6 74.920 74.320 74.920 74.320 74.5 74.5 M75X4 74.940 74.465 74.940 74.465 74.6 74.6 M75X3 74.952 74.577 74.952 74.577 74.7 74.7 M75X2 74.962 74.682 74.940 74.640 74.8 74.7 M75X1.5 74.968 74.732 74.950 74.700 74.79 74.76 M76X6 75.920 75.320 75.920 75.320 75.5 75.5 M76X4 75.940 75.465 75.940 75.465 75.6 75.6 M76X3 75.952 75.577 75.952 75.577 75.7 75.7 M76X2 75.962 75.682 75.962 75.682 75.8 75.8 M76X1.5 75.968 75.732 75.968 75.732 75.79 75.79 M78X2 77.962 77.682 77.940 77.640 77.8 77.7 M80X6 79.920 79.320 79.920 79.320 79.5 79.5 M80X4 79.940 79.465 79.940 79.465 79.6 79.6 M80X3 79.952 79.577 79.952 79.577 79.7 79.7 M80X2 79.962 79.682 79.940 79.640 79.8 79.7 M80X1.5 79.968 79.732 79.950 79.700 79.79 79.76 Current JIS: Tolerance class 6g (M1.6 or larger), 6h (M1.4 or smaller) Old JIS: Class 2 · Current JIS: JIS B 0209-2 and JIS B 0209-3 · Old JIS: JIS B 0209-1959 and JIS B 0211-1959 · Nominal sizes marked with *1 have been removed from the current JIS. · Nominal sizes marked with *2 are not specified in the current JIS nor in the old JIS. Technical-53