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 5895-01-104-4410
NSN 5930-00-624-9608
NSN 4140-01-116-4604
NSN 5925-00-269-2685
NSN 5945-01-155-9612
NSN 6105-01-438-8546
NSN 5996-01-625-0427
NSN 5855-01-533-7051
NSN 5998-01-445-5296
NSN 5855-00-149-0766
NSN 5975-01-392-8472
NSN 5925-01-412-2033