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 5835-01-432-1277
NSN 6650-01-356-2834
NSN 5975-00-321-1146
NSN 5910-00-266-8438
NSN 5905-00-071-9901
NSN 5998-01-255-2081
NSN 6240-01-107-7371
NSN 6145-01-182-9200
NSN 5965-00-110-3330
NSN 4140-01-604-9981
NSN 5996-00-762-8740
NSN 5935-01-365-8186