Open-Source Tool

Rehoboth Fastener Calculator

An open-source desktop tool for transparent bolted-joint pre-assessment, created to help engineers inspect assumptions and compare calculation results. The tool is provided as engineering support software, not as a replacement for professional judgment.

Current Calculation Scope

  • Stiffness of clamped parts and the bolt
  • Torque-to-preload relationship
  • Joint separation and slippage checks
  • Fatigue performance verification
  • Thread engagement and thread shear checks

Download

The Windows installer can be downloaded directly from the website. The source code is intended to remain open so the calculation logic can be reviewed transparently.

License modelOpen-source
Engineering Transparency

Why open-source?

  • Calculations should be inspectable, not mysterious.
  • Users can review assumptions and understand the limits of the tool.
  • The app supports civil and commercial applications only.