Sep 15, 2005 #1 metalonis Mechanical Feb 28, 2002 183 I have some SA-193 B7 bolts, some are marked B7 and some are marked J B7. Is there some significance to the "J" marking?
I have some SA-193 B7 bolts, some are marked B7 and some are marked J B7. Is there some significance to the "J" marking?
Sep 15, 2005 #2 wes616 Aerospace Mar 19, 2005 940 J most likely means it is a rolled thread, vs. a cut thread. Wes C. Upvote 0 Downvote
Sep 15, 2005 1 #3 ajack1 Automotive Nov 24, 2003 1,148 Isn't the J a rounded end to the thread? Upvote 0 Downvote
Sep 15, 2005 1 #4 diamondjim Mechanical Jul 30, 2000 992 ajack is right, it means the thread a full radius, and needs the mating part to be slightly truncated as to not interfere with the radius. Upvote 0 Downvote
ajack is right, it means the thread a full radius, and needs the mating part to be slightly truncated as to not interfere with the radius.
Sep 15, 2005 #5 diamondjim Mechanical Jul 30, 2000 992 http://www.uscti.com/TapsFinal2.pdf url for information on UNJ threads. Upvote 0 Downvote
Sep 15, 2005 #6 wes616 Aerospace Mar 19, 2005 940 thanks for setting me straight guys. Wes C. Upvote 0 Downvote
