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 5999-01-025-6228
NSN 5950-01-092-6653
NSN 6320-01-279-0343
NSN 6220-01-178-4652
NSN 6240-01-440-4632
NSN 5985-01-014-7993
NSN 2925-01-259-7092
NSN 5998-01-167-8819
NSN 6620-01-469-2352
NSN 5910-00-221-5060
NSN 2925-00-238-1668
NSN 5855-00-149-0766