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 6145-01-372-3040
NSN 5910-01-127-4212
NSN 5965-00-739-2063
NSN 5895-01-213-2387
NSN 5945-00-550-7092
NSN 5930-01-421-2417
NSN 6105-01-149-6861
NSN 5950-00-223-1466
NSN 5935-00-455-7691
NSN 6110-01-324-0021
NSN 6150-00-775-7274
NSN 5895-01-366-3021