Disclosed is a method of assembling a metal clamp and body springs of a wiper blade for vehicles, and an assembly. The method includes forming a plurality of through holes at major sides of the body springs, forming a plurality of protrusions corresponding to the through holes at a major side of the clamp such that the protrusions extend outward from the major side of the clamp, inserting the protrusions of the clamp into the respective through holes of the body springs, fixing the protrusions, which are located in the respective through holes, in the respective through holes by pressure welding or riveting such that the clamp is mounted to the body springs.