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 7035-01-293-3431
NSN 5960-01-593-4760
NSN 5855-00-688-9954
NSN 5935-01-139-5246
NSN 6110-01-562-7257
NSN 6150-00-025-0352
NSN 6620-01-406-3584
NSN 5950-00-595-9269
NSN 6130-01-200-1170
NSN 7035-01-462-8701
NSN 6135-01-627-2603
NSN 6320-01-466-4175