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 5990-01-552-1503
NSN 5985-01-104-2846
NSN 6105-01-539-0219
NSN 6135-01-185-1057
NSN 5905-00-135-2847
NSN 5835-01-431-6877
NSN 5915-01-126-8315
NSN 5990-00-827-0684
NSN 6620-00-251-0569
NSN 5920-01-504-6284
NSN 6220-00-491-5814
NSN 5855-01-616-6544