Screw threads for aerospace construction, смотри 49.030.10
ICS Поле
21.040.01 Screw threads in general
21.040.10 Metric screw threads
21.040.20 Inch screw threads
Including Whitworth screw threads
Pipe threads, смотри 21.040.30
21.040.30 Special screw threads
Including miniature screw threads, pipe threads, etc.