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 5935-01-325-2472
NSN 5920-00-285-2245
NSN 5915-01-388-2183
NSN 5935-00-537-4273
NSN 5998-00-621-1499
NSN 5930-01-236-1531
NSN 5895-01-610-7044
NSN 5895-01-150-7866
NSN 7035-01-594-1967
NSN 5855-01-330-3669
NSN 5998-01-214-5697
NSN 5915-01-470-8561