Tensile strength is a material propery, it does not depend on size. Look at a material chart to find its yield and tensile strenghts.
Then use the stress equation, Stress = Force / Area to determine...
Grade 10.9 bolts or capscrews have a minimum tensile strength of 1040N/mm2 and a hardness of 320 - 380Hv10.
Grade 12.9 bolts or capscrews have a minimum tensile strength of 1220N/mm2 and a hardness...