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 5965-01-164-7982
NSN 5895-01-149-2622
NSN 5935-00-203-1292
NSN 6240-01-537-3218
NSN 5910-00-604-0334
NSN 5990-01-463-2279
NSN 5998-01-489-1123
NSN 5925-00-203-1278
NSN 6145-00-111-3902
NSN 6105-01-570-5907
NSN 6135-01-385-7276
NSN 7035-01-562-8692