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 4140-01-105-9471
NSN 5920-01-560-9908
NSN 6150-01-298-1131
NSN 5910-01-150-6361
NSN 5935-01-262-0375
NSN 6240-00-768-0950
NSN 5960-01-525-1690
NSN 6220-01-152-2637
NSN 5960-01-628-2760
NSN 5990-00-644-3365
NSN 5985-00-860-2383
NSN 5915-01-517-9852