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 6105-00-149-7956
NSN 5895-01-233-0683
NSN 6610-00-667-6832
NSN 4140-01-454-7119
NSN 5950-01-393-0038
NSN 5998-00-116-8981
NSN 5965-01-135-3679
NSN 6105-01-207-0152
NSN 6145-00-791-9820
NSN 5960-01-337-5339
NSN 5895-00-096-7933
NSN 5910-01-251-5584