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 5930-00-372-5642
NSN 6110-01-214-0355
NSN 5910-01-468-5523
NSN 5920-00-501-7834
NSN 4140-00-357-1188
NSN 6645-00-295-8535
NSN 5960-00-500-6028
NSN 6650-01-302-6247
NSN 6610-00-315-9315
NSN 5905-01-422-1670
NSN 6320-01-426-8947
NSN 5925-00-411-5170