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 5855-01-391-7472
NSN 5910-01-295-3329
NSN 5905-01-394-3687
NSN 6650-01-643-0534
NSN 5960-01-462-1864
NSN 5855-00-472-2055
NSN 5960-00-517-9359
NSN 6620-01-394-0365
NSN 6620-01-318-8314
NSN 6610-01-352-5500
NSN 5985-01-554-1037
NSN 5930-01-437-5337