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.)
Classification: Nuts of iron or steel
NSN 4140-01-581-2051
NSN 5975-01-472-3887
NSN 6105-00-990-4795
NSN 5975-00-244-0706
NSN 6105-00-407-9048
NSN 5905-00-840-6011
NSN 6620-00-527-6523
NSN 6145-01-395-1057
NSN 5855-01-083-1027
NSN 5998-00-079-5068
NSN 6240-00-099-8606
NSN 5935-00-226-8416