screw(socket head cap,hex screw) Material:SCW435 (4137/1.7262) Hardness:34-43HRC compressive strength:12.9 grand screw(socket head cap,hex screw)Material:SCW435 (4137/1.7262)Hardness:34-43HRCcompressive strength:12.9 grand Referance :MISUMI, HASCO,FUTEBA,DME,DANNY standard.Following customers' drawings to process any different kind of plastic component/accessories. ,hardware component/accessories ...