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 5915-01-515-3092
NSN 6610-01-400-3880
NSN 5915-01-633-9845
NSN 5950-01-580-3330
NSN 5985-01-300-3555
NSN 5945-00-057-0668
NSN 6130-01-286-3814
NSN 5835-01-286-6499
NSN 4140-00-121-6746
NSN 5920-01-456-1560
NSN 5999-00-358-1933
NSN 5965-01-492-0274