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 5990-00-221-0878
NSN 7035-00-300-3208
NSN 5999-01-017-2377
NSN 6620-00-872-2108
NSN 6135-01-108-6057
NSN 5935-00-285-2767
NSN 5975-01-096-6270
NSN 6650-01-337-4365
NSN 6685-01-446-7300
NSN 5835-01-330-8597
NSN 6220-00-186-8565
NSN 6685-01-161-3703