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 6220-01-653-9536
NSN 5910-01-432-0126
NSN 5930-01-641-9831
NSN 5950-00-952-6744
NSN 5910-00-916-2280
NSN 5935-01-537-0095
NSN 5965-01-645-1505
NSN 5935-01-146-4851
NSN 6135-00-998-5884
NSN 6130-00-246-8691
NSN 5935-01-268-2780
NSN 5910-00-756-4428