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 5910-00-240-4994
NSN 6130-00-518-4305
NSN 5950-00-329-5810
NSN 6240-01-500-2152
NSN 5915-01-187-8588
NSN 6620-01-022-9868
NSN 5895-00-958-2011
NSN 5935-01-301-8393
NSN 5835-01-550-1577
NSN 5930-00-146-8583
NSN 6610-00-202-5481
NSN 5895-00-661-1773