Estimate pitch diameter and minor diameter for metric threads from major diameter and pitch. Use it for quick CNC threading checks before programming or inspection planning.
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Request a Proposal →Thread inspection depends on thread class, flank angle, pitch errors, and gauge method. Treat these values as geometry references.
Pitch diameter is the theoretical cylinder where thread tooth thickness and groove width are equal. It is critical for thread fit.
No. Use the correct thread standard, tolerance class, and gauges for acceptance. This calculator gives a quick reference.
The visible calculator is oriented around metric geometry. Inch thread calculations require TPI-based formulas and the correct thread form.
Use this page for a quick geometry check before programming or inspecting a metric thread.
Continue with closely related tools from the machining calculator library.
Use the calculator freely. If the result points to a tooling or process problem, we can source the exact carbide tooling you need from vetted factories in China. Compare factory-direct pricing.
Before you commit to a spec, it helps to know what the market pays for it. These are real, publicly listed factory prices — not a quotation, and not a guess.
We source the tool families below direct from vetted Chinese factories, matched to the material and tolerance you just worked out. Every batch ships with its material certificate and dimensional record.
MEASURING PITCH DIAMETER? Pitch diameter is the number that belongs on an incoming inspection sheet. Our inspection routine is in the gates we run before goods ship.
Tell us the part material, lot size, and target price. We’ll match a verified China factory and return a quotation within 48 hours.