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 6130-01-556-6869
NSN 6150-01-634-0575
NSN 5990-01-625-5923
NSN 5950-00-104-8113
NSN 6240-00-919-9186
NSN 6240-01-423-1335
NSN 4140-00-307-2732
NSN 6320-01-369-1648
NSN 5855-01-338-1718
NSN 5998-00-100-4948
NSN 6320-01-261-5983
NSN 2925-01-111-2927