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 5990-01-386-5561
NSN 6135-01-264-0382
NSN 7035-01-361-8821
NSN 6110-01-162-8902
NSN 4140-01-592-0628
NSN 6650-01-287-0096
NSN 5998-00-974-6016
NSN 6145-01-357-6288
NSN 6645-01-212-9474
NSN 5935-01-654-9790
NSN 5905-00-233-7104
NSN 6685-00-692-8343