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 5999-01-351-3171
NSN 5895-01-138-1668
NSN 6610-01-023-1918
NSN 6645-01-148-4703
NSN 5975-00-230-4824
NSN 5905-00-518-5354
NSN 5998-01-436-3512
NSN 6650-01-436-8558
NSN 5920-00-863-8848
NSN 6320-01-177-3192
NSN 5998-01-084-3491
NSN 4140-01-299-6713