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 5960-00-722-6845
NSN 5999-01-561-6385
NSN 5920-00-296-0454
NSN 6650-01-551-4124
NSN 5975-01-483-1113
NSN 4140-00-526-4505
NSN 5999-00-707-3257
NSN 6135-01-424-1114
NSN 6110-01-414-9786
NSN 5996-01-292-0053
NSN 5996-01-583-2078
NSN 5998-00-576-4861