1. What is a Thread Height Calculator?

Definition: This calculator estimates the theoretical thread height based on thread pitch and a proportion factor.

Purpose: It helps engineers, machinists, and technicians determine thread dimensions for manufacturing and quality control.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( TH \) — Thread height (millimeters)
• \( P \) — Thread pitch (millimeters)
• \( k \) — Proportion factor (typically 0.5-0.8)

Explanation: The thread pitch is multiplied by a proportion factor that accounts for thread form and engagement requirements.

3. Importance of Thread Height Calculation

Details: Proper thread height ensures proper fastener engagement, strength, and compatibility with mating parts.

4. Using the Calculator

Tips: Enter the thread pitch in millimeters and proportion factor (default 0.65). The factor must be between 0.5 and 0.8.

5. Frequently Asked Questions (FAQ)

Q1: What is thread pitch?
A: Thread pitch is the distance between corresponding points on adjacent threads, measured in millimeters.

Q2: Why does the proportion factor range from 0.5 to 0.8?
A: This range accounts for different thread forms - 0.5 for square threads, ~0.65 for metric threads, up to 0.8 for some specialized forms.

Q3: What's the most common proportion factor?
A: For metric threads, 0.65 is commonly used (H = 0.866 × P × 0.75 ≈ 0.65 × P).

Q4: Is this theoretical or actual thread height?
A: This calculates theoretical height. Actual manufactured threads may vary slightly due to tolerances.

Q5: How does thread height relate to thread depth?
A: Thread height is the theoretical maximum, while depth depends on tooling and may be slightly less in practice.