TWC Forum used vBulletin 4 software. We did, multiple times, try to upgrade to vB5, but it did not go through successfully. The URLs changed completely and that was bad! Moreover, support for ...

Functions and modules for creating metric (ISO) and English (UTS) standard screws and nuts. Included is a function for calculating the standard dimensions of screws including the tolerance values that ...

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Screw-thread standards for federal services 1957. Part I: unified, American, American national, and national miniature threads by United States. Interdepartmental Screw Thread Committee.