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 6110-01-547-6355
NSN 5920-01-660-1950
NSN 5915-01-227-5746
NSN 6105-00-476-9541
NSN 5998-01-005-4914
NSN 5855-00-221-9435
NSN 6145-01-212-2036
NSN 7035-00-150-2379
NSN 5965-00-959-4910
NSN 5960-00-788-0401
NSN 5915-01-370-6757
NSN 5996-00-479-5939