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 6110-01-013-7639
NSN 5990-01-586-8202
NSN 6645-00-337-3638
NSN 6220-01-044-9079
NSN 5950-01-038-5166
NSN 5996-01-461-1731
NSN 6240-00-852-0688
NSN 6685-01-072-1886
NSN 6135-01-384-3915
NSN 5985-01-245-9064
NSN 6105-01-242-4872
NSN 5960-01-553-4557