1.Grade 2, M4*20 2.DIN912/933/7991/7984/6921,ISO 7380,JIS,BS etc 3..M3~ ... .SpecificationMaterialTi Grade 2, Grade 5(Ti6Al4V), Grade 7, Ti6Al4V ELIStandardDIN912/933/7991/7984/6921,ISO 7380,JIS,BS etcSizeM3~22 X ... /12.9Applicationssports apparatus,racing industry like racing motorcycles and cas,racing bicycles,sailing boat and medical industry etc 4.We also manufacture ...