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 5925-01-117-8170
NSN 5895-01-191-5740
NSN 6150-00-144-7115
NSN 5990-01-514-8030
NSN 6150-01-171-0030
NSN 2925-01-120-8712
NSN 5945-01-479-3463
NSN 5925-00-497-1860
NSN 6130-01-381-0828
NSN 5905-01-521-7216
NSN 6240-01-415-3014
NSN 6650-00-518-2962