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 6145-01-430-2784
NSN 5998-00-557-2832
NSN 6145-01-573-7233
NSN 5930-01-166-8428
NSN 5935-00-360-1968
NSN 5998-01-072-0615
NSN 5835-01-138-8622
NSN 5985-01-197-7905
NSN 5895-01-338-3838
NSN 6145-01-423-7877
NSN 4140-01-500-2334
NSN 5935-01-373-7047