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 6105-00-954-6535
NSN 5935-00-042-4671
NSN 6645-00-497-3495
NSN 5930-01-123-9568
NSN 2925-01-302-8591
NSN 5945-00-639-9848
NSN 5960-01-217-8928
NSN 5950-01-506-4694
NSN 4140-00-166-8023
NSN 6110-00-701-0765
NSN 6240-01-633-9357
NSN 5985-01-422-0534