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 5930-00-167-8058
NSN 4140-01-533-7037
NSN 5965-01-101-9094
NSN 6130-01-589-8604
NSN 5985-01-440-3867
NSN 5910-01-541-3952
NSN 5915-01-484-3396
NSN 6150-01-413-3597
NSN 5925-00-122-8674
NSN 5965-01-086-0081
NSN 6145-01-530-7171
NSN 5835-01-192-4165