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 5915-01-152-4820
NSN 5998-01-386-3123
NSN 5990-01-003-2627
NSN 6220-01-047-4060
NSN 5999-01-443-3258
NSN 6650-01-602-7567
NSN 5975-00-021-7127
NSN 6610-01-182-9828
NSN 6240-00-453-3170
NSN 5835-01-219-0586
NSN 5999-01-476-8822
NSN 6685-01-206-4974