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About product and suppliers:
        Alibaba.com offers 165 m12 m14 m16 m18 m20 bolt and nut products. About 69% of these are bolts, 1% are other fasteners, and 1% are construction machinery parts. 

A wide variety of m12 m14 m16 m18 m20 bolt and nut options are available to you, such as free samples. 

There are 165 m12 m14 m16 m18 m20 bolt and nut suppliers, mainly located in Asia. The top supplying countries or regions are China, South Korea, and Japan, which supply 97%, 1%, and 1% of m12 m14 m16 m18 m20 bolt and nut respectively. 

M12 m14 m16 m18 m20 bolt and nut products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 67 with ISO9001, 22 with ISO14001, and 17 with Other certification.