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U.S. American threaded screws UNS
American Threaded Screws and Fasteners UNC

U.S. American threaded screws and fasteners - UNC coarse thread

We are specialised in U.S. threaded screws and leader in e-commerce distrubution

For UNC tools see:i :  utensili misure in pollici

For UNC taps and dies see : filetti in pollici