Countersink Depth Calculator

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Calculates the depth of a countersunk hole based on the screw head diameter and countersink angle.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Screw Head Diameter and Countersink Angle in the units shown.

Step 2

Read Countersink Depth in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Screw Head Diameter: 6 mm; Countersink Angle: 82°

Countersink Depth: 3.451105222 mm

Screw Head Diameter: 8 mm; Countersink Angle: 82°

Countersink Depth: 4.601473629 mm

Screw Head Diameter: 10 mm; Countersink Angle: 82°

Countersink Depth: 5.751842036 mm

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