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 5975-01-592-5757
NSN 6220-01-096-9082
NSN 6145-01-395-6410
NSN 4140-00-203-4844
NSN 5999-01-353-6573
NSN 6105-00-642-2056
NSN 2925-01-055-9705
NSN 5855-00-288-1408
NSN 5945-01-251-5023
NSN 5990-00-337-5359
NSN 2925-00-388-8932
NSN 5930-00-992-6725