Standard: DIN, ANSI, BSW, JSB, ISO Certificate: ISO, ROHS, SGS Head type: Flat Head, pan head, hex head Diameter: 1.2mm-6.3mm Length: 10-150mm Material: stainless steel, carbon steel, Brass Surface treatment: zinc plated, dacro, passivate Grade: 4.6-12.9, A2-70, A4-80 Property: good anti-corrosion ability and anti rust Service: OEM, MDG