... so on.FIRST is a leading manufacturer and supplier of titanium fasteners, nuts, bolts, washers, machine screws, rivets, pins made of refractory ... metals, such as PC titanium, 6Al-4V titanium, in DIN, JIS, ASTM specifications.Products: Titanium screws, titanium bolts, titanium nuts, titanium gaskets, titanium rings, fasteners, titanium parts.Standard: DIN912 ...