Screw Thread Tutorial Online

 From:  OSTexo
4623.10 
Hello,

This is the link I worked from. I am coming to think threading is all about tolerances, so rather than be confused by all the numbers on various manufacturer sites I used this for the reference. Assuming you're using UTS or ISO Metric threads, which is most of the world apparently, you can make any of those screws just knowing the pitch. I really hope my interpretation of this diagram is correct. If not please let me know.

http://en.wikipedia.org/wiki/File:ISO_and_UTS_Thread_Dimensions.svg

http://en.wikipedia.org/wiki/Unified_Thread_Standard

http://en.wikipedia.org/wiki/ISO_metric_screw_thread