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 6240-01-059-3563
NSN 5925-01-175-5719
NSN 5935-00-005-5984
NSN 6650-01-375-0507
NSN 4140-01-432-1447
NSN 5998-01-437-9585
NSN 6135-00-503-7213
NSN 5999-01-302-9221
NSN 5996-00-305-6152
NSN 6220-01-417-3330
NSN 5895-01-351-1441
NSN 6610-00-518-4919