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 6105-01-373-1932
NSN 6650-01-135-7472
NSN 5835-00-847-7277
NSN 6130-00-292-5058
NSN 7035-01-585-2723
NSN 5920-01-172-9978
NSN 5990-01-212-2037
NSN 5999-00-482-8993
NSN 5985-00-446-2756
NSN 6110-00-855-5695
NSN 5996-01-570-4583
NSN 6220-01-314-8409