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 5835-01-176-5422
NSN 5930-01-201-7679
NSN 6105-01-576-9724
NSN 5935-01-189-5223
NSN 5930-01-029-9012
NSN 6105-01-012-4176
NSN 6135-01-400-2947
NSN 5975-00-172-0568
NSN 5920-01-257-8190
NSN 5905-00-900-9793
NSN 5945-01-494-9374
NSN 6220-01-553-7261