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 6650-01-414-9425
NSN 6110-01-292-9844
NSN 5905-01-588-1936
NSN 5985-00-633-9963
NSN 6610-00-664-2190
NSN 6650-00-824-5510
NSN 5945-01-652-6991
NSN 5990-00-067-6791
NSN 5996-00-060-7309
NSN 5999-00-515-7354
NSN 6610-00-680-8325
NSN 6220-01-349-6311