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 5835-00-483-7615
NSN 5925-00-546-3258
NSN 5965-01-162-8689
NSN 5965-01-338-2181
NSN 6320-01-268-3072
NSN 5965-01-423-8543
NSN 5935-01-566-7465
NSN 6105-00-402-6315
NSN 6110-01-240-5704
NSN 6130-01-462-6084
NSN 5835-01-223-5084
NSN 6620-01-122-8886