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 6220-01-158-6556
NSN 5999-01-125-4743
NSN 6610-01-408-7827
NSN 5965-01-419-8200
NSN 6650-00-854-0265
NSN 5965-01-224-4993
NSN 2925-01-325-3974
NSN 6220-00-999-1911
NSN 6610-01-633-8931
NSN 5925-01-542-8235
NSN 6145-00-705-6679
NSN 5998-01-145-3456