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 6240-01-458-2140
NSN 6610-01-400-3880
NSN 6685-00-188-1991
NSN 5965-01-296-8991
NSN 4140-01-144-3257
NSN 6650-01-230-5155
NSN 5965-00-400-6228
NSN 6685-00-870-2760
NSN 6105-01-633-8975
NSN 4140-01-383-6184
NSN 5930-01-166-6557
NSN 6130-01-384-0315