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Pitch Diameter Calculator
Calculate screw thread pitch diameter, minor diameter, and thread depth
Thread Engineering Standard: For 60° V-threads (Unified / Metric), $\text{Pitch Diameter} = \text{Major Diameter} - (0.6495 \times \text{Pitch})$, where $\text{Pitch} = \frac{1}{\text{TPI}}$ (Threads Per Inch).
Thread Parameters
Calculation Results
⚠️ Pitch diameter calculations are based on standard 60-degree symmetrical threads. Always verify exact Class of Fit (e.g., 2A/2B or 3A/3B) using official machinery handbooks.