BoltedJoint photos on Flickr

As engineers, we often do quick hand calculations for shear stress and bearing stress in bolted joints—but repeating them again and again wastes time.

So I built a simple tool where you just enter load, bolt diameter, plate thickness, and number of bolts… and instantly get the stresses in MPa.

👉 Useful for:

Mechanical engineering students

Machine design calculations

Quick design checks on lap joints

Try it here 👇

multicalculators.online/bolted-joint-stress-calculator

Feedback from fellow engineers always helps me improve these tools 😊

#MechanicalEngineering #MachineDesign #BoltedJoint #EngineeringCalculations #DesignEngineering #Manufacturing #EngineeringTools #OnlineCalculators #LearningByDoing

In bolted joints, failure usually doesn’t happen because of the bolt… by Dnyaneshwar Mahajan

It happens because of insufficient thread engagement.

Many engineers still rely on thumb rules like “1× or 1.5× diameter is enough.”

But material strength, bolt grade, and diameter change everything.

That’s why this FREE Thread Engagement Calculator is useful 👇

It instantly tells you the minimum safe thread engagement length — no assumptions, no guesswork.

✅ Considers bolt tensile strength

✅ Considers nut/material strength

✅ Gives accurate engagement length in mm

✅ Helpful for mechanical, design & maintenance engineers

👉 Try it here:

multicalculators.online/thread-engagement-calculator

Because in real engineering, safety lives in the details.

#MechanicalEngineering #DesignEngineering #BoltedJoints #EngineeringCalculations #Manufacturing #FreeEngineeringTools #EngineerLife

Bolt torque preload calculated in one click by Dnyaneshwar Mahajan

Still tightening bolts based on “feel” or rough torque charts?

That’s where most joint failures begin.

A little extra torque → bolt yield

A little less torque → joint loosens in service

This simple diagram shows how torque, diameter, and preload are connected —

but doing this manually every time leads to mistakes.

That’s why a calculator helps.

🔧 Bolt Torque Preload Calculator

✔️ Uses standard torque–preload relation

✔️ Reduces human and unit errors

✔️ Gives quick, reliable torque values

✔️ Useful for design, maintenance & shop floor

If you want consistent tightening and safer joints, use the tool instead of guessing.

👉 Try it here:

🔗 multicalculators.online/bolt-torque-preload-calculator

Good joints don’t come from experience alone —

they come from correct calculation.

#MechanicalEngineering

#BoltedJoints

#BoltTorque

#EngineeringTools

#MachineDesign

#MaintenanceEngineering

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