Advanced
Bolted Joint
Analysis.
Professional engineering platform for preload, tightening torque and full structural margin verification of critical bolted assemblies — browser-native, no install.
Engineering-grade
bolted joint analysis.
Preload & tightening torque
Klein-Kellermann formula with full scatter. MA_min/max with method-specific ε.
Advanced analytical methodology
Full compliance model: δb/δc, loading plane factor Φ, cone model.
Thermal preload variation
CTE-based ΔFv for T_min/T_max conditions with full CTE mismatch analysis.
11 safety margins
Yield & ultimate rupture, separation, sliding, thread stripping, washer & flange bearing.
Dynamic assembly schema
Real-time SVG cross-section with washers, multi-plate stacks, load arrows.
PDF engineering report
Official justification document ready for flight authority review.
Simple, transparent pricing.
Start for free. Upgrade when your projects demand the full power of BoltCore.
Discover BoltCore. No account required. Ideal for learning the methodology.
Try for Free →Full access for individual engineers. Everything for professional verification.
For teams and organisations needing full traceability and collaboration.
Contact us →Full feature comparison
Detailed breakdown of each plan.
| Feature | Free | Pro | Enterprise |
|---|---|---|---|
| Bolt Configuration | |||
| Diameters | M6/M8 | ✓ | ✓ |
| Resistance classes | 8.8/10.9 | ✓ | ✓ |
| Stainless A2/A4 | ✗ | ✓ | ✓ |
| Custom bolt geometry | ✗ | ✓ | ✓ |
| Tightening Parameters | |||
| Torque + Fv | ✓ | ✓ | ✓ |
| Custom µ coefficients | ✗ | ✓ | ✓ |
| Scatter ε / Mp / FZ | Fixed | ✓ | ✓ |
| Safety Margins | |||
| Tightening (Von Mises) | ✓ | ✓ | ✓ |
| Bolt rupture yield & ult. | ✗ | ✓ | ✓ |
| Separation / sliding | ✗ | ✓ | ✓ |
| Thread stripping | ✗ | ✓ | ✓ |
| Flange & washer bearing | ✗ | ✓ | ✓ |
| Assembly & Loads | |||
| Multi-plate stacks | 2 plates | ✓ | ✓ |
| Material library | ✗ | ✓ | ✓ |
| Thermal (CTE mismatch) | ✗ | ✓ | ✓ |
| FA / FQ external loads | ✗ | ✓ | ✓ |
| Export & Reporting | |||
| Assembly schema (SVG) | ✓ | ✓ | ✓ |
| PDF engineering report | ✗ | ✓ | ✓ |
| Branded PDF (logo) | ✗ | ✗ | ✓ |
| API access | ✗ | ✗ | ✓ |
Built around critical
engineering standards.
BoltCore implements an advanced analytical methodology inspired by the best practices used in European space programs for bolted joint verification.
Compliance model, thermal analysis, loading plane factor, thread stripping analysis, and bearing margin calculations are all integrated into a unified, traceable workflow designed for flight-critical assemblies.
Engineering precision.
Advanced engineering methodology.
Start for free today. No account needed. Upgrade when your projects demand it.