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 4140-01-392-3107
NSN 5999-01-173-2138
NSN 5930-01-069-1104
NSN 6150-01-250-7332
NSN 6645-01-089-6459
NSN 2925-01-108-3307
NSN 5996-01-025-5683
NSN 5920-01-554-9804
NSN 6650-01-529-6721
NSN 5920-01-469-6025
NSN 5915-00-473-2112
NSN 6650-01-528-6563