1. What is the Torque Formula?

The torque formula T = K × F × D calculates the torque required for steel fasteners, where T is torque in Newton-meters (Nm), K is the friction coefficient, F is the clamp load 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)
• \( K \) — Coefficient (unitless)
• \( F \) — Clamp load (N)
• \( D \) — Diameter (m)

Explanation: The formula accounts for the relationship between friction coefficient, clamp load, and fastener diameter to determine the required torque.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for proper fastener installation, ensuring sufficient clamping force while preventing damage to threads or fastener failure.

4. Using the Calculator

Tips: Enter the friction coefficient (typically 0.2 for steel), clamp load 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 steel fasteners?
A: For steel fasteners, the friction coefficient K typically ranges from 0.15 to 0.25, with 0.2 being a common default value.

Q2: How do I determine clamp load requirements?
A: Clamp load depends on the specific application and joint requirements. Consult engineering specifications for your particular application.

Q3: Why is diameter measured in meters?
A: The formula requires consistent SI units. Diameter in meters ensures proper unit conversion with Newtons for force and Newton-meters for torque.

Q4: Are there limitations to this formula?
A: This formula provides an estimate and may need adjustment for specific fastener types, lubrication conditions, or unusual applications.

Q5: Can this calculator be used for other materials?
A: While designed for steel fasteners, the formula can be applied to other materials by adjusting the K coefficient appropriately.