General dimensions of screwing dies and the interchangeability dimensions of die stocks. Applicable to screwing dies intended for the manufacture of: ISO metric coarse threads M1 to M68; ISO metric fine threads M1 to M56; ISO inch (UNC) threads No. 1-64 to 2¾ - 4; ISO inch (UNF) No. 0-80 to 1½ - 12.Cross References:BS 1127:Part 2