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Unified fine screw threads
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/1973

ISO general purpose metric screw threads -- Tolerances -- Part 5: Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2001

ISO metric trapezoidal screw threads -- Basic dimensions
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2013