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 5935-00-816-8729
NSN 5895-01-500-6659
NSN 5925-01-534-7749
NSN 5895-00-067-7760
NSN 5999-00-099-6889
NSN 5960-00-116-9983
NSN 2925-01-444-6676
NSN 6320-01-352-5653
NSN 6150-01-623-8802
NSN 5930-01-621-5959
NSN 6240-01-252-8850
NSN 5835-01-148-5835