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About product and suppliers:
        Alibaba.com offers 1,402 bolted king pin products. About 18% of these are trailer parts, 1% are other auto steering system, and 1% are metal crafts. 

A wide variety of bolted king pin options are available to you, such as trailer plugs, trailer locks, and trailer wheels. 

There are 1,399 bolted king pin suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and United Arab Emirates, which supply 99%, 1%, and 1% of bolted king pin respectively. 

Bolted king pin products are most popular in Southeast Asia, Africa, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 458 with ISO9001, 353 with Other, and 97 with ISO/TS16949 certification.