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 6130-01-274-2499
NSN 5930-01-038-8781
NSN 5960-00-452-6043
NSN 5975-01-614-2046
NSN 6620-01-118-7588
NSN 6645-01-434-2648
NSN 7035-00-104-7613
NSN 6105-00-104-6853
NSN 6220-00-643-4045
NSN 5960-01-649-1341
NSN 5835-00-309-0311
NSN 5945-01-540-3506