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 4140-01-143-3520
NSN 4140-01-238-5389
NSN 5999-00-492-2123
NSN 6685-01-139-7388
NSN 5999-01-291-1716
NSN 5915-01-096-0866
NSN 5965-00-995-6636
NSN 5990-01-183-6478
NSN 5965-00-807-9159
NSN 6685-01-634-0611
NSN 5975-01-626-2213
NSN 6130-00-269-4077