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 5945-00-399-0716
NSN 5999-01-366-6024
NSN 5925-01-225-3430
NSN 5835-01-412-6901
NSN 6685-01-464-6997
NSN 5985-01-192-1208
NSN 5945-00-801-3587
NSN 5945-01-420-5891
NSN 5965-01-618-4939
NSN 5996-00-468-1874
NSN 5835-01-231-4994
NSN 5998-01-153-2689