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 5975-00-938-1532
NSN 6645-01-032-5337
NSN 5975-01-617-9170
NSN 6220-00-299-7749
NSN 6110-00-153-5395
NSN 6650-01-443-1476
NSN 6650-00-101-0559
NSN 5996-00-787-3581
NSN 6150-00-343-7404
NSN 5930-00-299-7623
NSN 5998-00-023-0653
NSN 5895-01-162-3679