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 5935-01-481-1818
NSN 6240-00-759-7404
NSN 7035-00-490-0485
NSN 7035-00-371-7749
NSN 5990-00-467-7431
NSN 5990-01-124-9063
NSN 6645-01-261-0056
NSN 5996-00-929-2216
NSN 6620-00-246-5159
NSN 6610-01-633-8931
NSN 6240-00-840-8142
NSN 5930-00-540-0900