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About product and suppliers:
        Alibaba.com offers 1,172 m4 carriage bolt products. About 82% of these are bolts, 1% are anchors. 

A wide variety of m4 carriage bolt options are available to you, such as free samples. 

There are 1,172 m4 carriage bolt suppliers, mainly located in Asia. The top supplying countries or regions are China, Taiwan, China, and India, which supply 99%, 1%, and 1% of m4 carriage bolt respectively. 

M4 carriage bolt products are most popular in South America, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 710 with ISO9001, 363 with ISO14001, and 68 with Other certification.