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 6145-01-150-6018
NSN 5990-00-498-5934
NSN 5835-01-412-6901
NSN 2925-01-331-5039
NSN 5935-01-432-2739
NSN 5945-01-014-7051
NSN 7035-01-502-3830
NSN 5985-00-161-2723
NSN 5965-01-100-0942
NSN 5999-00-165-3698
NSN 6130-01-436-2312
NSN 7035-01-003-9142