Magnetic permeability shall be less than 1.2 before fabrication and not greater than 2.0 after fabrication as measured in 200 oersted field
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 5920-00-221-6439
NSN 2925-00-149-0760
NSN 5835-01-170-5537
NSN 5990-01-532-0670
NSN 5999-00-166-9771
NSN 5920-00-473-0563
NSN 6645-01-436-7381
NSN 5990-01-492-1114
NSN 6150-01-254-1664
NSN 5998-01-150-3457
NSN 5855-01-388-6456
NSN 6150-01-552-9446