Double Headed Bolts Generally Require Surface Treatment

Double headed bolts generally require surface treatment, and there are many types of bolt surface treatment, commonly used including electroplating, blackening, oxidation, phosphating, and non electrolytic zinc sheet coating treatment. However, electroplated fasteners account for a large proportion in the actual use of fasteners. Especially widely used in industries and fields such as automobiles, tractors, household appliances, instrumentation, aerospace, and communication. However, for threaded fasteners, it is not only necessary to have a certain anti-corrosion ability during use, but also to ensure the interchangeability of threads, which can be referred to as screw fit here. It is necessary to establish specialized electroplating layer standards in order to simultaneously meet the dual performance requirements of anti-corrosion and interchangeability for threaded fasteners during use.