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 5855-01-398-0090
NSN 6650-00-757-8465
NSN 6320-01-092-4101
NSN 5930-00-432-0151
NSN 5930-01-429-0144
NSN 5998-01-502-3620
NSN 5960-01-336-3130
NSN 5945-01-518-8590
NSN 5945-01-364-1178
NSN 6105-00-284-7642
NSN 6130-01-578-6456
NSN 6645-01-488-5466