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 5965-00-661-0469
NSN 5965-01-217-7167
NSN 5990-01-486-2556
NSN 2925-01-461-6372
NSN 2925-01-068-3844
NSN 2925-01-233-8545
NSN 4140-01-546-0385
NSN 5910-00-530-6094
NSN 5975-01-562-0537
NSN 6645-00-363-9775
NSN 5905-01-185-2933
NSN 5920-01-090-3285