Countersink Depth Calculator

To calculate countersink depth, first determine the diameter of the countersink and the angle of the tool. Divide the diameter by 2, then divide by the tangent of half the angle. This will give you the depth required for the countersink.

Countersink Depth Calculator

Enter any 2 values to calculate the missing variable

Diameter

mm cm in ft

Angle

Degrees Radians

Countersink Depth

mm cm in ft

Calculate Reset

The Countersink Depth Calculator is operated for assessing how deep a countersink hole should be for various applications, such as drilling and chamfering. Simply put, countersinking is the process of enlarging the opening of a drilled hole to accommodate a flat or tapered head of a screw.

Depending on the angle, such as 82 degrees or 100 degrees, the depth of the hole can vary. Tools like this calculator make it easier to ensure precision when machining parts. Fundamentally, understanding the countersink depth formula helps to calculate and control the depth needed for various screw sizes.

Formula:

$$CD = \frac{D/2}{\tan(A/2)}$$

Variable	Description
$CD$	Countersink Depth
$D$	Diameter of the hole
$A$	Countersink angle

Solved Calculations

Example 1

Step	Calculations
Diameter	$D = 10 \, \text{mm}$
Countersink angle	$A = 82^\circ$
Apply the formula	$CD = \frac{10/2}{\tan(82/2)}$
Final result	Countersink Depth $CD = 1.57 \, \text{mm}$

Example 2

Step	Calculations
Diameter	$D = 8 \, \text{mm}$
Countersink angle	$A = 100^\circ$
Apply the formula	$CD = \frac{8/2}{\tan(100/2)}$
Final result	Countersink Depth $CD = 1.10 \, \text{mm}$

What is a Countersink Depth Calculator?

The countersink depth calculator is a handy tool for measuring the appropriate depth when creating countersink holes. It is especially useful when working with various screw sizes and angles, such as the common 82-degree countersink. Likewise, this tool allows users to input dimensions and quickly calculate how deep the countersink needs to be to properly seat a screw head.

What is more, for those who need precise results, this calculator can also account for different angles, such as 100-degree and 45-degree chamfers. It simplifies the process by using specific formulas for each situation, making tasks like measuring counterbore depth or calculating the chamfer depth much easier.

Along with that, it helps ensure the correct size is chosen for countersinking operations by referencing tools like the countersink depth chart.

Anyways, if you’re working with metal or wood, the countersink depth formula will assist you in setting and controlling the proper depth. This ensures that the screw head sits flush with or slightly below the surface, which is critical for both aesthetics and functionality.

Final Words:

To close it, the countersink depth calculator simplifies the process of calculating accurate countersink depths, ensuring perfect fits for screws and enhancing the overall quality of work.