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 6685-01-317-3659
NSN 5910-01-128-2261
NSN 5915-00-232-3387
NSN 5915-00-726-0476
NSN 5855-01-145-4903
NSN 5920-01-587-0928
NSN 4140-00-270-8075
NSN 5975-00-738-4903
NSN 5905-01-537-8457
NSN 5905-01-424-1739
NSN 5905-01-291-5491
NSN 5925-01-547-4304