These custom precision cnc machining parts were used in engine, which were made by NC lathe and 3-axis machining center. The materials include aluminum and brass, the finish is sand blasting + clear anodizing. For these precision cnc machining spare parts, the roughness is Ra 0.8 and the tight tolerance is +/-0.01mm. JST has rich experience of making these kind of precision cnc machining engine parts, most of them were exported to the US, UK, Germany and Italy. For some custom precision cnc machining spare parts, we can also do castings/forgings+machining. In addition, we can also do the finishes, such as plating, chroming, paiting, polishing, anodizing and heat treatment. If you have any projects for custom precision cnc machining engine parts, please do feel free to contact us for quotation.