2a and b8
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 5905-00-508-1947
NSN 5985-01-527-7050
NSN 5930-00-027-8428
NSN 6645-01-633-1852
NSN 6240-01-432-0819
NSN 5855-01-054-9014
NSN 5835-01-386-4027
NSN 5998-00-542-9310
NSN 5910-01-104-9189
NSN 5855-01-057-2200
NSN 6110-01-393-9187
NSN 5905-01-649-1212