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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5999-01-461-1779
NSN 5950-01-371-2588
NSN 5915-01-113-7872
NSN 5930-01-157-5014
NSN 5910-00-715-7966
NSN 5990-00-079-2903
NSN 6110-01-493-5973
NSN 5990-01-020-6598
NSN 6150-01-579-4917
NSN 6650-01-290-4001
NSN 5990-01-067-6015
NSN 4140-00-594-4452