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About product and suppliers:
        Alibaba.com offers 14,893 copper machine screw products. About 19% of these are screws, 1% are nails. 

A wide variety of copper machine screw options are available to you, such as free samples, paid samples. 

There are 14,915 copper machine screw suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 97%, 2%, and 1% of copper machine screw respectively. 

Copper machine screw products are most popular in Domestic Market, North America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 9,121 with ISO9001, 2,524 with Other, and 988 with ISO14001 certification.