🔘 Bolt Hole Pattern Calculator

Generate X/Y coordinates for circular bolt patterns. Set hole count, bolt circle diameter, center offset, and rotation.

Hole #XYAngle (°)

Why Bolt Hole Patterns Matter

A bolt circle defines equally spaced holes on a circular pattern — the foundation of flange mounting, bearing caps, and fixture plates. Getting precise X/Y coordinates eliminates layout errors and lets you program CNC positions directly.

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