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 5895-01-542-3301
NSN 5996-01-444-5409
NSN 5855-00-125-0780
NSN 5920-00-931-6528
NSN 5935-01-022-7215
NSN 4140-01-582-2951
NSN 5925-01-613-5869
NSN 5996-01-400-3558
NSN 5998-01-539-0887
NSN 5996-01-595-6529
NSN 6685-01-451-4796
NSN 6220-01-656-3925