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 7035-01-649-6063
NSN 5998-00-484-3417
NSN 5999-01-290-3925
NSN 5835-01-209-6410
NSN 6105-01-004-7890
NSN 6320-00-578-6898
NSN 5905-00-097-1737
NSN 6150-01-352-1784
NSN 5930-01-559-6796
NSN 5895-01-290-3887
NSN 6685-01-430-4304
NSN 5985-00-779-9130