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About product and suppliers:
        Alibaba.com offers 5,458 knurled thumb screw products. About 85% of these are screws, 5% are bolts, and 3% are machining. 

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

There are 5,458 knurled thumb screw suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of knurled thumb screw respectively. 

Knurled thumb screw products are most popular in Western Europe, North America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 4,412 with ISO9001, 694 with ISO14001, and 175 with Other certification.