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 5835-01-154-8916
NSN 6645-01-071-0727
NSN 5920-01-312-8106
NSN 5930-01-391-9730
NSN 5920-01-104-1937
NSN 5935-00-287-9898
NSN 6240-01-121-0469
NSN 6150-01-439-7571
NSN 6610-00-006-1489
NSN 5910-00-296-8816
NSN 6130-01-319-3564
NSN 5950-01-077-3251