Bolts are classified as grade x.y where x and y represents what ?
1
x represents 1/100th of ultimate tensile strength and y represents the ratio of yield stress to ultimate tensile stress
2
x represents the ratio of yield stress to ultimate tensile strength and y represents 1/100th of ultimate tensile stress
3
x represents 1/100th of ultimate tensile strength and y represents the 1/100th of yield stress
4
x represents 1/100th of yield stress and y represents 1/100th of ultimate tensile strength