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 6650-00-446-8787
NSN 5915-00-304-8195
NSN 5945-00-274-4204
NSN 5905-00-467-1398
NSN 6610-01-261-4487
NSN 5996-01-630-5791
NSN 5945-01-277-3752
NSN 6110-01-321-6241
NSN 5835-00-518-4507
NSN 6130-00-844-2792
NSN 5915-01-619-1548
NSN 5905-00-244-6205