1. What is the Torque Formula?

The torque formula T = K × F × D calculates the torque required for bolt tightening, where T is torque in Newton-meters (Nm), K is the torque coefficient (dimensionless), F is the force in Newtons (N), and D is the bolt 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)
• \( D \) — Bolt diameter (m)

Explanation: The formula calculates the rotational force needed to properly tighten a bolt, accounting for friction and other factors through the torque coefficient.

3. Importance of Torque Calculation

Details: Proper torque calculation is essential for ensuring bolt integrity, preventing under-tightening (which can lead to loosening) or over-tightening (which can damage threads or cause bolt failure).

4. Using the Calculator

Tips: Enter the torque coefficient (typically between 0.15-0.25 for standard applications), the force in Newtons, and the bolt diameter in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical torque coefficient value?
A: For standard unlubricated bolts, K is typically between 0.15-0.25. Lubricated bolts may have values as low as 0.10.

Q2: Why is proper torque important?
A: Correct torque ensures proper clamping force, prevents joint failure, and maintains the integrity of mechanical connections.

Q3: How do I determine the appropriate torque coefficient?
A: The coefficient depends on factors like thread condition, lubrication, and material. Consult engineering references or manufacturer specifications.

Q4: Can this formula be used for all bolt types?
A: While the basic formula applies to most bolts, specialized applications may require adjustments or different calculation methods.

Q5: What units should I use for accurate results?
A: Consistent SI units are required: force in Newtons (N), diameter in meters (m), which will give torque in Newton-meters (Nm).