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 6130-01-600-4348
NSN 5920-01-148-9193
NSN 2925-01-615-9859
NSN 6105-01-427-8439
NSN 5998-01-159-9988
NSN 5960-00-496-1286
NSN 5895-01-158-5545
NSN 6650-01-372-3730
NSN 5920-01-455-5524
NSN 5935-01-268-3931
NSN 6110-01-341-4419
NSN 5960-00-895-0542