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 5998-00-288-5533
NSN 6620-01-371-1655
NSN 5990-01-390-2177
NSN 5920-01-426-1806
NSN 5920-01-036-7105
NSN 5915-00-296-5031
NSN 5945-01-242-9430
NSN 5910-01-191-1970
NSN 5930-01-014-2499
NSN 5999-00-860-9642
NSN 5990-01-093-8328
NSN 6135-00-170-8819