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 5975-00-952-1791
NSN 5895-01-575-9789
NSN 5930-00-754-5606
NSN 6610-01-587-8491
NSN 5998-01-092-4189
NSN 6320-01-388-3125
NSN 6320-01-459-6992
NSN 5960-01-258-6708
NSN 5999-01-406-3161
NSN 7035-00-076-4097
NSN 5930-01-158-5694
NSN 5910-00-052-0777