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 5965-01-408-9551
NSN 5835-01-143-9143
NSN 5925-00-702-5322
NSN 5996-00-952-3452
NSN 5998-01-556-1963
NSN 5965-00-013-7990
NSN 5998-01-399-1261
NSN 5990-00-622-1010
NSN 2925-01-248-6028
NSN 2925-00-233-5644
NSN 5930-01-418-7186
NSN 5935-01-443-5897