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 6685-00-431-9608
NSN 6150-00-805-7982
NSN 5935-00-687-2254
NSN 4140-00-764-3839
NSN 6220-00-593-1779
NSN 6130-00-863-5345
NSN 6135-01-648-0057
NSN 5920-01-592-3416
NSN 5998-01-594-7203
NSN 6220-00-106-0113
NSN 6320-01-317-3663
NSN 6105-01-094-8228