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 6145-00-459-4899
NSN 6240-01-269-8454
NSN 6150-00-116-6863
NSN 5999-01-500-2107
NSN 6650-00-977-7533
NSN 5935-01-235-4289
NSN 6650-01-213-1231
NSN 5925-00-054-8476
NSN 5990-01-024-9659
NSN 5998-00-801-1316
NSN 5950-01-011-7355
NSN 6645-01-408-6568