... 3.Usage: various relays,contactors,small switches etc Electric silver contact of copper and silverMain Materials:We can provide you the rivets ... defects on the surface of rivet contact, and no copper exposed or visible.2. No stratification, burr, sripe,pit etc in the ... .50.6,0.8,1.00.3~0.41.2,1.51~2.04,69-123.00.8,1.0,1.20 ... ,155.52.5,3.06.03.015,206.51.2,1.5,2.00.5~0.73.0,3.57.03.520 ...