Bolt area
A = pi d^2 / 4
Structural calculator
Bolt Shear & Tension Calculator
Check per-bolt stress from shear load, tensile load, diameter, and bolt count.
Calculator
Enter structural values
Select units beside each input. Results update automatically.
Result
About this calculator
How it works
Bolt group load is simplified as evenly shared across all bolts.
Formulas
Formulas used
Shear stress
tau = V / (n A)
Tensile stress
sigma = T / (n A)
Worked example
Example calculation
Shear stress
20 kN across four 10 mm bolts gives 63.7 MPa
Guide
How to use this calculator
- Enter the relevant load, stress, geometry, material, or member values.
- Select units beside each input where unit menus are shown.
- Use the highlighted result for screening, then check assumptions before design use.
Reference
What the results mean
Shear stress
Average transverse stress in each bolt.
Tensile stress
Average axial stress in each bolt.
Assumptions and limits
Before using the result
- These are simplified elastic or empirical checks for early-stage engineering review.
- Final structural design requires correct boundary conditions, load paths, code checks, material data, factors of safety, and professional review.
- Complex tools here provide key values or simplified estimates rather than a full structural analysis model.
FAQ
Bolt Shear & Tension Calculator questions
Are these results suitable for final structural design?
Use these calculators for education, screening, and early checks only. Final structural design must follow applicable codes, load combinations, safety factors, material data, and qualified engineering review.
Why can real structures differ from these results?
Real structures include boundary conditions, imperfections, connection behavior, load eccentricity, dynamics, residual stress, buckling modes, fatigue, and code-specific requirements.
Can I use different units?
Yes. Select units beside inputs where menus are shown. Values are converted internally before solving.
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