Daves Comments: Unlike the crappy junk that comes from China, you get a real socket head cap screw with this part. What is significant here is they are heat treated and the tip of the screw will cut into the nose gear music wire (which is VERY hard) actually locking the arm to the wire. POOR quality units come with a silver looking screw which is soft and the wire actually dents the tip of the screw when tigtened. This is why the slip constantly.