... A4-21 Finish:Black,Passivated,Zinc Hexagon socket set screws with flat point DIN913Material:Stainless Steel,Carbon Steel,Alloy Steel1) Various kinds ... finish, such as bright, zinc plated, black4) Can be made with different standards, such as ISO, DIN, ANSI, BS and special ... for your reference.Welcome customerized drawings. Hexagon socket set screw with flat point