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 5930-00-079-5159
NSN 5935-01-459-7568
NSN 6685-01-599-0105
NSN 5930-01-386-2042
NSN 5935-00-666-4877
NSN 6130-01-095-1295
NSN 6685-00-682-7459
NSN 6320-01-512-2031
NSN 5945-00-601-3160
NSN 6320-00-228-5678
NSN 5835-00-419-0575
NSN 5960-01-196-9203