Determine the minimum thread depth required to prevent the tapped hole from stripping
before the bolt yields.
Inputs / Parameters
Design Principle:
To ensure structural integrity in a bolted joint, the fastener must break in purely tensile stress
before the female threads strip out in shear, providing visible warning of overload.
Le ≈ R × (2 × At) / (π × D × 0.5) Calculation assumes 50% shear strength relation (Tresca criterion) and an
approximation of thread shear area. Ideal for standard UN profile threads.