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 5945-00-299-8295
NSN 5910-00-707-4900
NSN 5935-01-301-0446
NSN 5855-01-528-8776
NSN 5855-01-657-7657
NSN 5935-01-501-5608
NSN 5895-01-324-1531
NSN 7035-01-458-7762
NSN 6650-01-434-0331
NSN 5925-00-596-2146
NSN 6105-00-264-0355
NSN 6135-01-056-4609