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About product and suppliers:
        Alibaba.com offers 6,427 slotted head machine screw products. About 40% of these are screws. 

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

There are 6,427 slotted head machine screw suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of slotted head machine screw respectively. 

Slotted head machine screw products are most popular in Western Europe, Eastern Asia, and North America. 

You can ensure product safety by selecting from certified suppliers, including 2,473 with ISO9001, 469 with Other, and 225 with ISO14001 certification.