螺纹模的一般尺寸和模座的互换性尺寸。适用于制造ISO公制粗螺纹M1至M68的螺纹模具；ISO公制细螺纹M1至M56；1-64至2¾-4号ISO英寸（UNC）螺纹；ISO英寸（UNF）编号0-80至1½-12。交叉引用:BS 1127:第2部分

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