... ,Alloy Steel 1> Description: High strength bolt, tension control bolt, T. C Bolt 2> Material: Alloy Steel 3> Surface: HDG ... 10.9,12.Bolts and nuts:Mechanical Properties1, Material: 40 Cr.2, Tensile strength: Mpa quartile 1220 (magnitude 12.9) .3 ... stainless steel etc.SizeM16-M30Length40mm-200mmTensile strengthMax:1240Mpa, Min:1040Mpa.Yield strengthMin:940MpaGrade8.8 or 10.9StandardDIN, ANSI, ASME, ASTM ...