1. What is the Torque Formula?

The torque formula T = K × F × D calculates the torque required for fasteners, where T is the torque in Newton-meters (Nm), K is a dimensionless torque coefficient, 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)
• \( K \) — Torque coefficient (dimensionless)
• \( F \) — Force (N)
• \( D \) — Diameter (m)

Explanation: The formula calculates the rotational force needed to properly tighten a fastener based on the coefficient, applied force, and diameter.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for ensuring proper fastener tension, preventing under-tightening (which can lead to loosening) and over-tightening (which can cause damage or failure).

4. Using the Calculator

Tips: Enter the torque coefficient (typically between 0.1-0.3 for most applications), force in Newtons, and diameter in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical value for the torque coefficient K?
A: The torque coefficient typically ranges from 0.1 to 0.3 for most fastener applications, but can vary based on material, lubrication, and thread condition.

Q2: Why is proper torque important in fasteners?
A: Proper torque ensures adequate clamping force, prevents joint failure, maintains seal integrity, and avoids damage to threads or components.

Q3: How do I convert torque units?
A: 1 Nm = 8.8507 lb-in = 0.7376 lb-ft. Use appropriate conversion factors for different torque units.

Q4: What factors affect the torque coefficient K?
A: Surface finish, lubrication, thread pitch, material combination, and thread condition all affect the torque coefficient value.

Q5: When should torque calculation be used?
A: Torque calculation is essential in automotive, aerospace, construction, and manufacturing industries where precise fastener tension is critical for safety and performance.