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 5910-00-887-2614
NSN 5925-01-187-0695
NSN 6105-01-101-4020
NSN 5965-01-352-1951
NSN 5996-01-507-9139
NSN 5925-01-598-8379
NSN 5999-01-554-3615
NSN 6130-01-071-9923
NSN 5960-01-395-9834
NSN 6610-01-629-4140
NSN 5835-01-222-2437
NSN 5930-01-113-2319