... pin used for plating, nut, screws, bolt, spring,accessories and others. Titanium pin,electrode pin,welding pin used for plating, nut, screws ... , bolt, spring, accessories and others.Specifications:1) Size: 0.5mm ... Good straightness5) Quality reaches the standard of ASTM B348-93 and ASTM B863-95a Titanium pin,electrode pin,welding pin