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 5996-00-459-7445
NSN 5925-00-321-8040
NSN 5855-00-293-4708
NSN 5985-00-578-7740
NSN 5835-01-442-6482
NSN 6320-01-415-0953
NSN 5990-00-452-9194
NSN 6150-01-633-1653
NSN 5985-00-538-0945
NSN 5985-00-324-2963
NSN 6110-00-113-1415
NSN 5910-01-287-8467