Yield strength is the amount of stress at which a bolt begins to deform plastically. Before reaching the yield point, the bolt will deform elastically and return to its original shape when the applied stress is removed.
The formula to calculate bolt yield strength is:
\[ \text{Yield Strength} = \text{Minimum Yield Strength} \times \text{Stress Area} \]
Consider the following details:
Using the formula:
\[ \text{Stress Area} = 0.7854 \times (0.75^2) = 0.4418 \, \text{square inches} \]
\[ \text{Yield Strength} = 36000 \times 0.4418 = 15904.8 \, \text{pounds-force} \]