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 6110-00-938-8701
NSN 7035-00-946-2642
NSN 5990-01-395-4194
NSN 5905-00-322-2819
NSN 5998-01-619-5054
NSN 6105-01-301-2293
NSN 6685-00-953-2528
NSN 6620-01-542-8709
NSN 5910-01-501-5099
NSN 6685-01-492-7337
NSN 5925-01-037-0797
NSN 5930-01-434-1292