Connecting device to link chains comprising at least two bodies and method for its manufacture

摘要

The driver (1) has projection (2) that is arranged projecting for securing article on the driver from fastening base (3). The projection and fastening base are formed with sub-portions (A,B) respectively such that they are more releasably joined. The sub-portions are formed with different materials. The fastening base is made of steel and projection is made of heat treatable steel. An independent claim is included for method for manufacturing driver.