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 6150-01-091-0234
NSN 6320-01-459-6992
NSN 5915-00-461-0529
NSN 5975-01-068-4125
NSN 4140-01-457-5539
NSN 6110-01-396-0017
NSN 7035-01-633-9537
NSN 6610-01-040-6922
NSN 6110-00-518-2998
NSN 5905-01-094-4319
NSN 5935-00-736-4498
NSN 6135-00-112-8637