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 5945-01-261-6750
NSN 5950-01-067-7391
NSN 6150-01-634-0575
NSN 6610-00-009-2736
NSN 6130-00-730-7411
NSN 6135-00-375-6861
NSN 5999-01-227-2526
NSN 6650-01-172-2226
NSN 5998-00-804-6136
NSN 5925-01-145-5330
NSN 2925-00-071-4197
NSN 5915-00-819-1359