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 6610-01-599-4462
NSN 5990-01-493-4039
NSN 5999-00-305-0008
NSN 6240-01-293-9068
NSN 6240-00-849-5026
NSN 6645-01-587-4642
NSN 5975-01-090-0952
NSN 6105-01-419-3386
NSN 6105-00-470-9042
NSN 5945-01-654-9004
NSN 5930-00-853-2748
NSN 5975-01-227-4967