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 5935-01-586-9294
NSN 5835-00-187-1481
NSN 5920-00-223-2409
NSN 5985-00-571-3945
NSN 5945-01-542-0232
NSN 5960-00-050-0442
NSN 6240-01-607-6252
NSN 6240-01-336-0732
NSN 5925-01-607-6279
NSN 5920-01-042-6680
NSN 5905-01-504-3758
NSN 4140-01-173-1822