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 6240-01-559-0684
NSN 5855-00-189-6066
NSN 5960-00-422-5376
NSN 6130-01-298-9913
NSN 5998-00-522-3771
NSN 5990-01-004-6343
NSN 7035-00-126-1899
NSN 5925-00-850-3506
NSN 5905-00-557-5619
NSN 5855-00-436-3852
NSN 5985-00-558-7770
NSN 6685-01-253-3484