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 6685-01-514-9969
NSN 5935-01-260-7828
NSN 6650-01-108-6629
NSN 5999-01-171-0315
NSN 6105-01-104-5214
NSN 6610-01-467-7068
NSN 6685-01-030-7451
NSN 5925-01-478-8718
NSN 4140-01-062-4561
NSN 6685-01-580-9640
NSN 5920-01-503-0429
NSN 6110-00-565-5986