Diameter//                Length//         Strength grade up to//
Cold forging products        ¨ª8§®~¨ª38§®               6~350§®           12.9
Bolts                                M8~24M(3/16"~1")     6~350§®            12.9
Nuts                                 M8~14M(#5~9/16")    
Screws                            M2~6M(#2~1/4")        4~75§®