All kinds of standard or non-standard bolts and screws are available. Standard: DIN, ASTM, ANSI, BS, ISO, AS, JIS, etc.Mechanical property: Grade 2, Grade 5, Grade 8, Class 4.8, Class 6.8, Class 8.8, Class 10.9, etcSurface finish: Black, Zinc plating, H.D.G, Dacromet, etc. Non-standard as per customers' drawings.