1. What is the Height of Fundamental Triangle?

The Height of Fundamental Triangle is the height of the thread when the profile is extended to a sharp vee form. It represents the theoretical height of the thread triangle in screw thread geometry.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( H \) — Height of Fundamental Triangle (m)
• \( D \) — Major Diameter of Internal Thread (m)
• \( Dc \) — Minor Diameter of Internal Thread (m)

Explanation: The formula calculates the height of the fundamental triangle by taking the difference between the major and minor diameters of the internal thread and dividing by the constant factor of 1.25.

3. Importance of Height Calculation

Details: Accurate calculation of the fundamental triangle height is crucial for thread design, manufacturing, and quality control in mechanical engineering applications.

4. Using the Calculator

Tips: Enter both major and minor diameters in meters. Ensure the major diameter is greater than the minor diameter for valid results.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the 1.25 factor?
A: The 1.25 factor is derived from thread geometry standards and represents the relationship between thread height and diameter differences.

Q2: Can this formula be used for external threads?
A: This specific formula is designed for internal threads. External threads may have different calculation methods.

Q3: What are typical values for thread heights?
A: Thread heights vary significantly based on thread size and type, ranging from fractions of millimeters to several millimeters.

Q4: How accurate is this calculation?
A: The calculation provides theoretical values based on standard formulas. Actual manufactured threads may have slight variations.

Q5: Are there industry standards for thread calculations?
A: Yes, various international standards (ISO, ANSI, DIN) provide specifications for thread calculations and tolerances.