climber511 Posted December 15, 2003 Share Posted December 15, 2003 http://www.unified-eng.com/scitech/bolt/boltmarks.html This link gives pictures of the ends of bolts showing markings for Grade etc. It may help identify different bolts - maybe someone can reprint it - I tried to cut and paste it but it wouldn't work for me. I'm not much on a computer, it's probably easy if you do. Quote Link to comment Share on other sites More sharing options...
BabyGrip Posted December 20, 2003 Share Posted December 20, 2003 Too bad it doesn't show the marking for the tougher bolts ie. grades 8.8, 10.9, 12.9 etc. Quote Link to comment Share on other sites More sharing options...
climber511 Posted December 20, 2003 Author Share Posted December 20, 2003 http://www.engineersedge.com/hex_bolt_identification.htm Try this one, babygrip. Quote Link to comment Share on other sites More sharing options...
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