ALLEN BOLT/hex socket bolt/DIN912 Grade: 8.8/10.9/12.9 ALLEN BOLT/hex socket bolt/DIN912Standards:ANSI(IFI),DIN,BS,JIS and per specially design.Material: 8.8/10.9/12.9Size:M4-M30Packing:1)Polybag2)Plastic Box3)Standard Export Carton We can supply nonstandard nuts and bolts as customers' requirements. DIN912