Q:

# What is the shear strength of a grade 8 bolt?

A:

The shear strength of a grade 8 bolt is 90,000 psi, assuming the bolt is between 1/4 inch to 1 inch. Shear strength is typically estimated to be 60 percent of tensile strength. The tensile strength of a grade 8 bolt is at least 150,000 psi.

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All grade 8 bolts have the same tensile strength per square inch. Thus, the larger the bolt, the stronger the tensile strength of the bolt. Shear strength must be calculated, because the American Society for Testing and Materials does not require shear strength values to be published. To calculate tensile strength of a bolt, the tensile stress area should be multiplied by 150,000 psi.

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## Related Questions

• A:

Converting from pounds per square inch to pascals is a simple unit conversion problem that can be solved in a short amount of time with pencil and paper or calculator. Simply multiply the known information by the conversion factor, cancel the units and solve the equation.

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• A:

Pounds per square inch cannot be converted to ft-lbs because psi is a measurement of pressure, whereas ft-lbs is a measurement of total energy. Neither one is in the International System of Units as a primary form of measurement. Psi and ft-lbs are primarily American and British units of measure.

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• A:

EN8 is a grade of steel that is commonly used in shafts, stressed pins and studs. It is a medium-strength steel that is unalloyed and has good tensile strength.