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 7035-00-946-2642
NSN 6130-01-157-3155
NSN 5945-00-571-7934
NSN 6650-01-523-3600
NSN 4140-01-644-6552
NSN 6150-01-388-7810
NSN 5999-00-413-4916
NSN 5999-01-634-0576
NSN 5835-00-761-5615
NSN 5835-01-110-0697
NSN 6145-00-623-7224
NSN 5930-00-226-2051