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 6240-00-491-7191
NSN 5999-01-384-3406
NSN 6320-01-191-6717
NSN 5975-01-195-5962
NSN 4140-01-386-6688
NSN 6320-00-468-5015
NSN 5925-00-265-9488
NSN 5920-00-004-6372
NSN 5960-01-546-2379
NSN 6110-01-399-6165
NSN 6650-01-391-4461
NSN 6240-01-150-0651