A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5999-01-085-4412
NSN 6135-01-142-2417
NSN 6145-01-341-6945
NSN 6130-01-347-3530
NSN 5999-00-385-1722
NSN 5960-01-423-1085
NSN 5905-01-274-5648
NSN 6145-01-375-5244
NSN 5905-01-132-4315
NSN 5905-00-793-2177
NSN 5905-00-083-3604
NSN 5996-01-128-4811