Square nut; heavy
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 6145-01-424-0354
NSN 6150-00-181-1711
NSN 6130-01-400-6123
NSN 6220-01-224-3926
NSN 6130-01-055-2227
NSN 6645-00-736-0476
NSN 5975-00-322-9865
NSN 5996-01-123-9038
NSN 5835-00-228-9082
NSN 6610-01-587-1803
NSN 6105-01-285-3367
NSN 5930-00-985-4780