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 2925-00-912-3993
NSN 6105-01-436-8967
NSN 4140-01-008-9708
NSN 5895-01-495-0244
NSN 5960-01-201-4249
NSN 5965-00-670-2931
NSN 5945-01-544-3300
NSN 6220-01-020-7596
NSN 6620-01-399-3615
NSN 6145-00-452-4501
NSN 4140-01-394-5304
NSN 5925-01-081-7253