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.)
NSN 2925-01-648-6859
NSN 5965-01-500-6786
NSN 5935-01-381-4297
NSN 5905-01-029-2213
NSN 5920-01-453-4320
NSN 6105-01-381-2496
NSN 5985-01-449-1356
NSN 5835-00-656-7317
NSN 6110-00-213-8078
NSN 5945-01-570-7341
NSN 6620-01-231-2078
NSN 5945-00-411-3603