SizeOutside Currediameter nt JISof externa Oldl thread JISBar diameter
Max.Min.Max.Min.Current JISOld JIS
M70X269.96269.68269.94069.64069.869.7
M70X1.569.96869.73269.95069.70069.7969.76
M72X671.92071.32071.92071.32071.571.5
M72X471.94071.46571.94071.46571.671.6
M72X371.95271.57771.95271.57771.771.7
M72X271.96271.68271.94071.64071.871.7
M72X1.571.96871.73271.95071.70071.7971.76
※ 2 M75X674.92074.32074.92074.32074.574.5
M75X474.94074.46574.94074.46574.674.6
M75X374.95274.57774.95274.57774.774.7
M75X274.96274.68274.94074.64074.874.7
M75X1.574.96874.73274.95074.70074.7974.76
M76X675.92075.32075.92075.32075.575.5
M76X475.94075.46575.94075.46575.675.6
M76X375.95275.57775.95275.57775.775.7
M76X275.96275.68275.96275.68275.875.8
M76X1.575.96875.73275.96875.73275.7975.79
M78X277.96277.68277.94077.64077.877.7
M80X679.92079.32079.92079.32079.579.5
M80X479.94079.46579.94079.46579.679.6
M80X379.95279.57779.95279.57779.779.7
M80X2 M80X1.579.962 79.96879.682 79.73279.940 79.95079.640 79.70079.8 79.7979.7 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 Inf