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 6650-01-579-3855
NSN 6130-01-134-7251
NSN 6110-00-811-0364
NSN 5930-00-139-9673
NSN 6150-01-241-8783
NSN 5925-00-849-2767
NSN 5999-01-608-4940
NSN 5975-01-348-3497
NSN 6130-00-583-9925
NSN 2925-00-933-0200
NSN 6650-01-604-9315
NSN 5915-01-229-5592