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 5925-01-215-2119
NSN 6645-01-409-2003
NSN 5960-01-467-7516
NSN 5999-01-228-5880
NSN 6150-01-096-7616
NSN 6645-01-205-3869
NSN 6620-00-437-3220
NSN 5835-01-113-4604
NSN 7035-01-236-5743
NSN 6150-00-726-6885
NSN 4140-01-528-4101
NSN 5935-01-429-9732