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 5965-01-298-1685
NSN 5998-01-621-9801
NSN 6240-00-107-8192
NSN 5945-01-149-8499
NSN 5945-01-258-5042
NSN 5905-01-316-6253
NSN 5965-00-246-5612
NSN 6620-01-223-7262
NSN 5975-01-167-7952
NSN 5975-00-117-9515
NSN 5920-01-306-6493
NSN 5965-01-302-4143