dindvik Posted November 15, 2010 Report Share Posted November 15, 2010 Anybody know what the treads on 7.7x58 barrel are? Quote Link to comment Share on other sites More sharing options...
Sailormilan2 Posted November 16, 2010 Report Share Posted November 16, 2010 I'm not sure which model you have, so here are some choices for you. Quote Link to comment Share on other sites More sharing options...
jeffturk Posted March 17, 2011 Report Share Posted March 17, 2011 I'm not sure which model you have, so here are some choices for you. I know what TPI stands for but what is the meaning of V? 12V TPI Quote Link to comment Share on other sites More sharing options...
gun nutty Posted March 17, 2011 Report Share Posted March 17, 2011 "Variable". Heh. No, it just means the threads are "V-shaped", rather than square-shaped or Acme-style (a form that's right between a V and a square). The "V-angle" is 60 degrees. The threads aren't necessarily pointed ("sharp"); they can have flats on their peaks and valleys. General: https://secure.wikimedia.org/wikipedia/en/wiki/Screw_thread#Form Excellent diagram of different thread types: http://www.mechlook.com/wp-content/uploads/2009/08/Machine_Machine-Tool_Lathe_General-Form-Dimensions-for-Standaard-Screw-Threads.jpg Acme: http://www.roton.com/identify_threads.aspx Quote Link to comment Share on other sites More sharing options...
jeffturk Posted March 20, 2011 Report Share Posted March 20, 2011 thanks. ya' learn something new every day. Quote Link to comment Share on other sites More sharing options...
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