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 5990-01-432-0523
NSN 5998-01-456-5358
NSN 6110-01-309-1829
NSN 5925-01-522-7577
NSN 5905-01-621-0316
NSN 2925-01-257-6225
NSN 6320-01-516-3836
NSN 5960-00-060-6688
NSN 6650-01-443-3668
NSN 5930-01-579-4499
NSN 6240-01-399-0343
NSN 5950-00-829-0452