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 6150-00-051-0404
NSN 5960-01-441-7047
NSN 6145-00-408-9976
NSN 6620-00-224-7739
NSN 7035-01-310-2587
NSN 5999-00-918-1612
NSN 6645-01-141-7016
NSN 6240-00-909-7938
NSN 5930-01-627-4780
NSN 6220-01-444-1889
NSN 5915-00-324-0727
NSN 5990-00-791-4064