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 6150-00-114-2785
NSN 5998-00-067-4316
NSN 5935-01-351-6159
NSN 5935-01-279-0194
NSN 5920-01-257-3016
NSN 6130-01-417-3497
NSN 5999-01-147-9932
NSN 6105-01-545-7364
NSN 5999-01-092-5941
NSN 5999-01-506-1483
NSN 6685-01-040-0064
NSN 5935-01-403-2844