Countersink Depth Calculator — Free Online Tool
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Countersink Depth Calculator

Calculate required countersink depth and diameter for flat head screws

Machining Formula:
• Depth = 0.5 × (Major Diameter - Pilot Hole Diameter) / tan(Included Angle / 2)
Countersink & Screw Parameters

Calculation Results

⚠️ Countersink depth calculations ensure flat head screws flush correctly with the workpiece surface. Always verify tool calibration and test on scrap material.

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