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 5975-01-013-2391
NSN 6650-01-147-0288
NSN 6110-00-258-8542
NSN 5935-00-769-6787
NSN 6130-01-469-5553
NSN 6220-01-290-0137
NSN 5905-01-198-0092
NSN 6685-01-557-7742
NSN 6620-00-982-6855
NSN 6650-01-049-1881
NSN 6150-00-076-8808
NSN 6150-01-484-8825