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 4140-01-362-0531
NSN 5999-01-421-2692
NSN 5915-00-898-1875
NSN 5855-01-136-9532
NSN 6135-00-542-6728
NSN 6645-01-529-2474
NSN 5925-00-827-0927
NSN 6110-01-116-5841
NSN 6150-00-214-2682
NSN 5985-01-415-5701
NSN 6610-01-338-8531
NSN 6105-01-381-2496