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Mechanical Engineering

Factor of Safety in Bolted Joints Calculator

Mechanical Engineering

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Factor of Safety in Bolted Joints

Equation and meaning

\[FOS = \frac{Failure_{stress}}{Allowable_{stress}}\]

Factor of Safety (FOS) in Bolted Joints

Variables in this formula

Allowable_stress — Allowable Stress
Enter this value unless it is the selected unknown.
Failure_stress — Failure Stress
Enter this value unless it is the selected unknown.
FOS — Fos
Enter this value unless it is the selected unknown.

How to use this calculator

  1. Leave one value emptyThe empty field is automatically treated as the unknown.
  2. Enter known values and unitsChoose N, kgf, dyn, SI or another compatible unit when available.
  3. Review the automatic answerThe result appears immediately and is substituted back into the formula to check the residual.
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