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 4140-01-257-2137
NSN 5910-00-400-3135
NSN 5965-00-646-4678
NSN 5965-01-443-4749
NSN 5999-01-347-1009
NSN 5950-01-089-8893
NSN 5915-01-573-3925
NSN 5950-00-159-1571
NSN 5930-00-149-8598
NSN 5910-00-242-2551
NSN 5855-00-911-1370
NSN 5895-00-427-9617