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 5998-01-454-8692
NSN 7035-01-322-0221
NSN 5960-01-593-4760
NSN 6135-00-491-9864
NSN 5985-01-352-3629
NSN 6240-01-011-2267
NSN 6145-01-243-0123
NSN 5985-01-276-4713
NSN 4140-01-476-8731
NSN 5910-01-603-2070
NSN 5915-00-796-2847
NSN 5930-01-634-0659