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: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 4140-01-389-3837
NSN 5855-00-079-2370
NSN 5996-01-395-9237
NSN 5915-01-534-5154
NSN 5915-01-451-4198
NSN 5975-00-422-1301
NSN 6685-01-121-4719
NSN 5999-01-288-7409
NSN 5960-01-141-7584
NSN 5925-01-243-6776
NSN 5996-00-565-6137
NSN 5965-01-271-0808