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 4140-01-394-4166
NSN 5910-00-958-7938
NSN 5975-01-525-9376
NSN 5905-01-426-0679
NSN 6110-00-003-3363
NSN 5950-00-400-6074
NSN 6610-01-495-8898
NSN 6135-01-222-0703
NSN 5965-01-467-2071
NSN 6130-01-369-0070
NSN 5945-00-465-2294
NSN 4140-00-155-8012