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 5985-00-771-6418
NSN 5920-00-488-4856
NSN 5835-00-315-3797
NSN 5855-00-189-6066
NSN 5920-00-008-7134
NSN 7035-00-205-1932
NSN 5975-00-150-6400
NSN 6610-00-466-3104
NSN 6150-01-629-3965
NSN 5835-00-537-7780
NSN 5975-00-369-7306
NSN 6240-00-268-8356