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 6610-00-633-4338
NSN 6685-01-592-5546
NSN 6130-01-541-6138
NSN 5835-01-442-6079
NSN 6685-01-591-6703
NSN 5996-01-202-9338
NSN 6150-01-139-3373
NSN 5925-01-642-3143
NSN 6220-00-105-3867
NSN 5895-01-062-5055
NSN 6610-01-458-1988
NSN 5965-00-615-0758