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 6105-01-503-1856
NSN 5996-01-053-5732
NSN 6110-01-470-6719
NSN 5935-00-878-7099
NSN 5990-01-092-1963
NSN 5950-00-116-1072
NSN 5920-00-221-4556
NSN 6610-00-890-3367
NSN 6240-00-400-7980
NSN 5975-01-570-9072
NSN 5990-01-503-0194
NSN 5950-01-501-5682