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 4140-01-140-6781
NSN 6150-00-371-4620
NSN 5965-01-174-6995
NSN 6650-01-600-4843
NSN 5975-01-290-5789
NSN 7035-00-946-2642
NSN 6610-01-649-5326
NSN 6320-01-116-3980
NSN 5915-00-961-8006
NSN 2925-00-065-7746
NSN 6130-00-600-7173
NSN 5855-01-634-0259