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 5910-00-810-6893
NSN 5965-01-435-6644
NSN 5935-01-272-2694
NSN 5950-01-258-4994
NSN 5998-00-993-9913
NSN 6135-01-467-5100
NSN 5945-01-078-6690
NSN 5905-01-160-6592
NSN 4140-00-167-1705
NSN 4140-01-104-4727
NSN 5945-01-461-7579
NSN 5895-01-441-9853