12.9 grade bolts 1.Material:SCM435, AISI4142 2.Size:M3-M64 3. ... 4.Finish:plain,zinc plating,passivate Feature:12.9 bolts grade DIN912 grade standard materialdiameterlengthsurfacepackagepaymentMOQ3.6AISIB18.3(A)Carbon Steelm1.6-m10mm ... you with the good quality and competitive price., 12.9 grade bolts DIN912