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: Nuts of iron or steel
NSN 4140-00-210-0552
NSN 6645-01-522-7447
NSN 5855-00-925-7887
NSN 6130-01-034-3673
NSN 5855-00-237-4088
NSN 5905-01-432-0136
NSN 5990-01-206-8895
NSN 2925-01-098-9549
NSN 6220-01-278-5803
NSN 5999-01-154-9217
NSN 5905-01-336-0172
NSN 5935-01-279-5311