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 6105-00-313-2007
NSN 5905-01-314-7221
NSN 5855-01-034-3845
NSN 6135-00-152-8729
NSN 6610-00-901-5137
NSN 6110-00-719-7209
NSN 6685-00-938-7904
NSN 5996-01-512-7678
NSN 6150-00-153-3196
NSN 6685-01-420-6480
NSN 5835-01-069-2359
NSN 5935-00-189-1522