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 2925-00-355-5130
NSN 6620-01-422-3522
NSN 5945-00-407-2783
NSN 6130-01-202-8025
NSN 6620-01-302-3549
NSN 5999-01-468-0917
NSN 5975-01-541-5661
NSN 5835-01-407-5260
NSN 5960-01-139-3136
NSN 6685-01-412-2534
NSN 5835-01-120-8829
NSN 6150-00-341-3860