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 6105-00-212-8013
NSN 4140-00-999-7355
NSN 5990-01-040-1320
NSN 5965-01-568-3492
NSN 6220-01-500-2935
NSN 6220-00-632-6469
NSN 5895-01-364-8459
NSN 5925-00-880-8379
NSN 5945-01-164-8241
NSN 5915-00-947-6551
NSN 2925-00-656-3224
NSN 5965-00-504-3779