Sep 12, 2002 #1 OBE Mechanical Joined Sep 12, 2002 Messages 1 Location US The ANSI acepted light nuts for flanges.
Sep 12, 2002 #2 Hush Mechanical Joined Dec 21, 2001 Messages 317 Location US ANSI 16.5 specifies heavy hex Upvote 0 Downvote