1. What is the Torque Formula?

The torque formula T = K × F × D calculates the torque value required for bolt tightening, where T is torque in Newton-meters (Nm), K is a dimensionless constant, F is the force in Newtons (N), and D is the diameter in meters (m).

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( K \) — Dimensionless constant (typically 0.2 for standard bolts)
• \( F \) — Force applied (N)
• \( D \) — Bolt diameter (m)

Explanation: The formula calculates the rotational force needed to properly tighten a bolt based on the material properties and dimensions.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for ensuring proper bolt tension, preventing joint failure, avoiding over-tightening, and maintaining structural integrity in mechanical assemblies.

4. Using the Calculator

Tips: Enter the K value (typically 0.2 for standard applications), force in Newtons, and diameter in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical K value for standard bolts?
A: For standard steel bolts, K is typically around 0.2, but this can vary based on lubrication, thread condition, and material.

Q2: How do I convert diameter from mm to m?
A: Divide the millimeter value by 1000. For example, 10mm = 0.01m.

Q3: What happens if I over-tighten a bolt?
A: Over-tightening can stretch the bolt beyond its yield point, cause thread stripping, or damage the connected materials.

Q4: Does lubrication affect the K value?
A: Yes, lubrication reduces friction and therefore lowers the K value, meaning less torque is needed to achieve the same clamping force.

Q5: When should I use a torque wrench?
A: Use a torque wrench for critical applications where precise bolt tension is required for safety and performance, such as in automotive, aerospace, or structural applications.