Indian standard dimensions for pipe threads for fastening purposes  pt. 1, profile and dimensions 
Indian Standards Institution 
 - New Delhi  Indian Standards Institution  1975 
 - 3p. 
<br/><br/> IS 2643 : Part 1 : 1975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NASA Thesaurus<br/>Screws and Threads-Standards<br/>Standards
<br/><br/><label>Universal Decimal Class. No.: </label>083.7:6321.882  / ISI