Head markings indented at 120.0 degrees
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: Nuts of iron or steel
NSN 5855-01-359-0373
NSN 6645-01-285-9431
NSN 5945-01-479-3439
NSN 5905-01-575-5187
NSN 6145-00-423-1563
NSN 5935-01-266-5772
NSN 6650-00-161-4122
NSN 6320-01-378-6191
NSN 5960-01-579-1661
NSN 6610-01-112-8137
NSN 6650-01-496-2662
NSN 6145-00-816-2005