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About product and suppliers:
        Alibaba.com offers 785 carriage screw products. About 25% of these are screws. 

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

There are 785 carriage screw suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of carriage screw respectively. 

Carriage screw products are most popular in North America, Domestic Market, and South America. 

You can ensure product safety by selecting from certified suppliers, including 400 with ISO9001, 81 with ISO14001, and 50 with Other certification.