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 6240-01-490-6922
NSN 5910-01-347-3593
NSN 6110-01-612-7225
NSN 6145-00-490-5497
NSN 5905-01-302-8936
NSN 6110-00-361-6510
NSN 6610-00-152-7216
NSN 5915-01-076-4538
NSN 5855-00-832-9341
NSN 5998-01-464-0745
NSN 5950-01-258-0012
NSN 6650-01-258-0811