Metric screw threads :  MJ profile / 
 ASME B1.21M-1997  Revisión of ANSI B1.21M-1978 
American National Standards Institute. 
 - 53 páginas. 
<br/><br/> Reaffirmed 2018 
<br/><br/><label>ISBN: </label>9780791824870 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roscas de tornillos.<br/>Tornillos
<br/><br/><label>Dewey Class. No.: </label>621.882  / A512m 1998