Covers the requirements for GO and NO GO screw ring gauges for ISO metric external threads size range from M1 up to and including M100 for ISO metric screw threads according to IS : 4218 (Part 1 to 6) 'ISO metric screw threads.'
IS 9610-1985 history
1986IS 9610-1985 ISO Specification for Ring Gauges for Leading and Unleashing Threads for Metric Threads (Sizes from M1 to and including M100)