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 5950-00-288-5994
NSN 5910-01-162-3436
NSN 5930-01-435-7519
NSN 6110-01-467-7047
NSN 6620-01-643-6817
NSN 5945-01-547-6646
NSN 6220-00-233-7436
NSN 6110-00-106-2057
NSN 4140-01-354-7907
NSN 5996-01-223-2702
NSN 6110-01-436-8127
NSN 5960-01-601-5565