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 6610-00-244-2816
NSN 5935-01-628-6567
NSN 6650-00-809-1817
NSN 5930-01-236-3346
NSN 5950-01-431-6792
NSN 5895-01-533-3250
NSN 5960-01-478-2672
NSN 5935-00-633-8302
NSN 6220-00-099-9192
NSN 6650-01-309-9152
NSN 5835-01-347-8714
NSN 6240-00-660-8849