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 5965-01-422-9770
NSN 6220-01-379-4528
NSN 6145-00-187-6405
NSN 5999-01-363-9936
NSN 5935-01-479-4039
NSN 5960-01-420-2372
NSN 6685-00-244-9117
NSN 5910-01-377-0165
NSN 2925-01-463-0594
NSN 6105-01-297-6114
NSN 5996-01-449-7131
NSN 5835-01-457-7951