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 6220-01-474-5682
NSN 6320-01-519-8767
NSN 6320-01-291-2023
NSN 6145-01-246-3988
NSN 5925-01-555-8524
NSN 6145-00-104-7789
NSN 6150-01-601-1201
NSN 5950-00-581-9999
NSN 5945-01-500-5370
NSN 6145-01-359-6449
NSN 5960-00-419-4521
NSN 5855-00-586-6255