Material is copper c2700
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 5905-01-573-8099
NSN 5935-01-529-9349
NSN 5835-01-495-0595
NSN 5930-00-171-8867
NSN 6110-01-517-6612
NSN 5950-00-155-9496
NSN 6240-00-507-8987
NSN 6135-01-525-4897
NSN 6620-00-004-1374
NSN 4140-01-327-3241
NSN 5996-01-226-0606
NSN 5925-01-466-2671