The Multi-Bolt Joint Load Distribution Calculator is a practical engineering tool designed to analyze how external loads are distributed among multiple bolts in a bolted connection. By considering bolt number, arrangement, load direction, bolt dimensions, material properties, and applied forces, it helps engineers calculate individual bolt loads, stress levels, and connection safety factors. The Multi-Bolt Joint Load Distribution Calculator supports mechanical design, structural verification, and fastener selection while reducing the risks of bolt overload, uneven load sharing, and joint failure.

Multi-Bolt Joint Load Distribution Calculator | Bolt Group Analysis & Safety

Input parameters

1 Bolt group geometry
· Custom bolt coordinates

Enter X and Y positions relative to the bolt group centroid (load center). Positive Y is upward in the diagram.

BoltXYDistance rUnit
2 Material strength
3 Applied loads

Direct share: Fbolt = Ftotal / n. Moment share: Fi = M × ri / Σ(r²). Combined bolt load: Fcombined = √(Ft² + Fs²). Safety Factor = Allowable / Actual.