单独的毫米和英寸系列的材料、尺寸和公差、光洁度、名称和标记，毫米系列适用于直径为10 mm至125 mm的螺纹部件，英寸系列适用于直径为½in至5 in的螺纹部件。交叉引用:BS 308BS 970:第1BS 1134BS 1580BS 1916部分:第1BS 2090BS 2470BS 3643BS 4168部分

Materials, dimensions and tolerances, finish, designation and marking of separate millimetre and inch series, the millimetre series suitable for threaded components of diameter 10 mm to 125 mm, the inch series for those of diameter ½ in to 5 in.Cross References:BS 308BS 970:Part 1BS 1134BS 1580BS 1916:Part 1BS 2090BS 2470BS 3643BS 4168