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 5835-01-268-1924
NSN 5930-00-203-5594
NSN 6620-00-795-0330
NSN 6610-01-096-7129
NSN 6150-00-371-9431
NSN 6220-01-302-8297
NSN 5935-00-774-4467
NSN 4140-01-423-1647
NSN 6685-01-113-2514
NSN 6135-00-170-8819
NSN 5990-00-434-0620
NSN 5895-01-346-5927