Fastener, Bolt and Screw Design Torque and Force Calculations

ISO Hardware Engineering Data
ANSI Hardware Engineering Data 
Strength of Materials

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The following design resources are for design screws and bolts for the proper torque, stress, strain, preload and other engineering critical design parameters.

Thread Stress Area Calculator and Equation

Thread Pull-out Stress and Force

Standard Thread Size Charts

Torque Clamp Force Calculator

Torque Conversion

Torque Design Guidelines and Considerations

Torque Conversion

Torque Wrench Adapter Calculation

Special Applications