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 4140-01-239-4498
NSN 5998-00-682-5717
NSN 6135-01-458-3851
NSN 6645-01-400-2119
NSN 6685-00-169-6505
NSN 5960-01-252-8821
NSN 5930-00-853-6647
NSN 5910-01-442-6323
NSN 6645-01-223-7274
NSN 5935-01-449-1091
NSN 5855-01-254-6826
NSN 5835-00-311-5491