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About product and suppliers:
        Alibaba.com offers 3,244 knurled thumb screw products. About 77% of these are screws, 1% are other camera accessories. 

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

There are 3,244 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 North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 2,560 with ISO9001, 650 with ISO14001, and 189 with ISO/TS16949 certification.