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 5990-01-480-9938
NSN 5975-01-281-7692
NSN 2925-00-660-8131
NSN 6110-01-317-7552
NSN 5996-00-127-8824
NSN 5990-01-393-4808
NSN 6620-01-532-4136
NSN 6650-01-292-1244
NSN 6130-00-003-9694
NSN 5998-01-206-6931
NSN 6685-00-862-7005
NSN 6620-01-412-0938