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 6240-01-417-2976
NSN 6150-01-564-3010
NSN 6240-01-020-1788
NSN 5990-01-142-0538
NSN 5855-00-177-3529
NSN 5999-00-262-6041
NSN 7035-00-916-9380
NSN 5985-00-403-1937
NSN 5998-01-319-6540
NSN 7035-01-612-0088
NSN 6110-01-040-1780
NSN 6650-01-087-0862