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 7035-00-371-7749
NSN 5965-01-382-9081
NSN 5910-00-271-7588
NSN 5985-00-296-3822
NSN 5855-01-480-1396
NSN 5975-01-281-7270
NSN 6150-00-466-2892
NSN 6110-00-546-2139
NSN 5935-01-227-8373
NSN 6150-00-861-1487
NSN 5996-01-371-9701
NSN 5835-01-274-1035