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 6150-01-382-1748
NSN 5920-00-296-4886
NSN 4140-01-092-0806
NSN 6685-01-369-0601
NSN 5996-01-328-0021
NSN 6110-01-119-3555
NSN 5945-00-985-4440
NSN 5960-01-362-1213
NSN 5915-01-642-8845
NSN 5950-01-196-6138
NSN 6610-00-180-7877
NSN 6130-01-117-5862