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 6130-01-284-1827
NSN 6110-00-034-3710
NSN 5996-01-293-7370
NSN 5855-01-348-4623
NSN 5945-00-802-6699
NSN 5990-01-336-3976
NSN 6145-00-051-9790
NSN 6645-01-163-6144
NSN 6130-00-172-2301
NSN 5965-00-113-2657
NSN 6150-01-660-8353
NSN 6650-01-246-4262