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 5935-01-013-9680
NSN 5910-01-257-8239
NSN 5905-01-272-0040
NSN 5999-00-119-4542
NSN 5945-01-501-5487
NSN 5965-00-990-8669
NSN 2925-01-255-6394
NSN 5975-01-298-1940
NSN 6145-00-405-9819
NSN 4140-00-376-5712
NSN 5945-00-752-5929
NSN 6645-01-615-9875