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 5998-00-422-2370
NSN 6685-01-444-2049
NSN 6145-01-205-9320
NSN 5990-01-633-9503
NSN 5920-00-998-9528
NSN 6645-01-590-4174
NSN 6685-01-263-0630
NSN 5855-01-462-5150
NSN 6220-00-132-6854
NSN 6685-01-250-0311
NSN 6240-00-962-0525
NSN 7035-00-135-4758