Screw threads for aerospace construction, see 49.030.10
ICS Field
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, see 21.040.30
21.040.30 Special screw threads
Including miniature screw threads, pipe threads, etc.
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  6. 21.040 - Screw threads