Bolt shear stress - double shear

Calculates bolt shear stress for a single shear plane.

Calculates bolt safety factor as allowable stress divided by actual stress.

Calculates average bolt stress as preload divided by tensile stress area.

Calculates tensile stress from axial force and bolt stress area.

Calculates the minimum bolt count for shear loading by rounding up.

Calculates average bearing pressure from force, bolt diameter, and plate thickness.