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 6685-01-583-4852
NSN 5950-01-040-6327
NSN 5895-01-171-5149
NSN 6135-00-375-6861
NSN 5910-01-092-7882
NSN 5935-01-213-9427
NSN 5835-00-554-0399
NSN 2925-01-336-2820
NSN 5998-00-596-1377
NSN 5905-01-034-9275
NSN 6620-00-186-3061
NSN 6685-01-036-6894