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 4140-00-223-8607
NSN 6110-01-431-5770
NSN 6610-01-417-3011
NSN 6135-01-432-2785
NSN 5990-01-182-5913
NSN 5910-00-935-3517
NSN 6240-00-434-3771
NSN 5855-01-604-6106
NSN 5855-01-360-6650
NSN 6240-00-518-3541
NSN 6320-01-504-3948
NSN 6220-00-631-1734