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 4140-00-513-1089
NSN 5985-01-111-3405
NSN 6320-01-125-3361
NSN 6150-01-020-7881
NSN 6130-01-624-5114
NSN 5920-00-427-7267
NSN 6145-01-443-3336
NSN 6620-01-124-0947
NSN 6105-00-175-9078
NSN 5998-00-374-2088
NSN 7035-01-218-6960
NSN 6650-01-631-6570