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 5930-01-163-7613
NSN 5945-00-011-1246
NSN 5920-01-602-5109
NSN 5960-00-557-6927
NSN 5960-01-505-2426
NSN 5975-00-178-1584
NSN 6320-00-779-5923
NSN 5999-00-072-0045
NSN 5920-01-113-2280
NSN 6220-01-469-6731
NSN 5930-00-356-8753
NSN 5985-00-156-7335