Hsfg Bolts Grade 10.9 belong to the ASTM A324 specification. These are intended for high stress applications because they have high tensile strengths. Suraj Metal Corporation is a leading manufacturer of the different bolts from the Grade 10.9 Bolt Material which has high tensile strength. The bolts can be in different sizes ranging from M20 to M100. There are different finishes to the Grade 10.9 Screw and other types of fasteners can come with different finishes as well.