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 5945-01-428-9544
NSN 5895-01-180-8006
NSN 4140-01-426-8428
NSN 6650-00-754-2276
NSN 6130-00-677-4085
NSN 5925-01-426-6923
NSN 5965-01-232-6509
NSN 5996-01-260-3981
NSN 5835-00-143-4153
NSN 2925-01-596-9448
NSN 5990-01-455-2919
NSN 6645-01-381-6084