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 5910-01-633-9963
NSN 6220-01-492-6409
NSN 5975-01-609-3038
NSN 5996-00-276-5480
NSN 5999-00-589-0777
NSN 7035-01-494-4131
NSN 5855-01-125-4768
NSN
NSN 5915-01-373-6065
NSN 5945-01-421-3321
NSN 5915-01-612-1871
NSN 6610-00-400-1252