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 5935-00-920-3528
NSN 6320-01-384-3850
NSN 5945-01-077-5736
NSN 5835-00-876-4544
NSN 5998-00-876-7932
NSN 6135-01-319-5567
NSN 5935-01-065-2281
NSN 5996-00-932-3796
NSN 5990-01-053-5115
NSN 5855-01-023-3727
NSN 6650-01-385-7151
NSN 5945-01-231-9607