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 4140-01-265-8669
NSN 4140-01-628-9921
NSN 6650-00-389-4111
NSN 6685-01-170-4926
NSN 5990-00-124-2556
NSN 6685-01-317-7113
NSN 5930-01-348-8962
NSN 4140-00-590-2317
NSN 6685-00-946-0318
NSN 5925-01-158-5008
NSN 6110-01-336-6676
NSN 7035-00-252-7467