We are offering titanium countersunk head screws standard:din7991din963 material:pure titanium, titanium alloy grade:gr1, gr2, gr5(ti6al4v), gr7, gr9 specification:m3-30*l6-300 head type:countersunk head driverecess type:slotted, hex, allen, torx, philips surface treatment: polishing, anodizing, nitriding color:ti nature, gold, blue, green, purple, black, rainbow.