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 6150-01-591-0948
NSN 5935-01-525-7299
NSN 6320-00-977-3930
NSN 5930-00-707-4138
NSN 6320-00-160-0899
NSN 4140-01-317-3126
NSN 6105-00-957-9252
NSN 6105-00-246-7116
NSN 6620-00-500-0041
NSN 6145-01-148-5948
NSN 6145-01-324-9444
NSN 5915-01-237-4894