1. What is Screw Clamp Force?

The screw clamp force represents the axial force generated when torque is applied to a screw or bolt. This force is crucial for maintaining joint integrity in steel structures and mechanical assemblies.

2. How Does the Calculator Work?

The calculator uses the screw clamp force formula:

Where:

• \( T \) — Applied torque (Nm)
• \( d \) — Bolt diameter (m)
• 0.2 — Empirical coefficient for steel

Explanation: The formula estimates the axial force generated based on the torque applied and the bolt diameter, using a standard coefficient for steel fasteners.

3. Importance of Clamp Force Calculation

Details: Proper clamp force ensures joint integrity, prevents loosening, and maintains the required pressure between joined components in steel structures.

4. Using the Calculator

Tips: Enter torque in Newton-meters (Nm) and bolt diameter in meters (m). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is the coefficient 0.2 used?
A: This is an empirical coefficient that accounts for friction and other factors in steel screw connections.

Q2: Does this apply to all screw materials?
A: No, this formula is specifically for steel fasteners. Other materials may require different coefficients.

Q3: How accurate is this calculation?
A: It provides a good estimate but actual force may vary due to lubrication, surface finish, and other factors.

Q4: What if my bolt diameter is in millimeters?
A: Convert to meters by dividing by 1000 before entering the value (e.g., 10mm = 0.01m).

Q5: Can this be used for critical applications?
A: For critical applications, consult engineering specifications and consider experimental verification.