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 6240-00-526-0243
NSN 6110-01-485-3312
NSN 6645-01-200-5289
NSN 5999-00-378-0931
NSN 6650-00-479-9329
NSN 6610-01-168-6943
NSN 5935-01-438-5589
NSN 6650-01-279-0658
NSN 6130-01-353-7282
NSN 5835-00-422-1441
NSN 6145-00-097-9437
NSN 5975-01-534-3769