Countersink hole

[mcs]

I have a body where I’m preparing holes for screws. The holes need to have a conical countersink at the top to accommodate the screw head. I’ve tried to achieve this using the chamfer/fillet function. However, this function only seems to do 45° angles, whereas I need different angles (40° and 30°) and a specified depth. I include a drawing of the screw. Is there any way to achieve this?

[JST]

Make truncated cones then translate center to center.
Push into it,
Subtract.
It is a slow way but work with small quantity…

[Dzee]

I achieved this by creating a sketch with half the profile of the countersunk hole then creating a body by revolving around the sketch. Then subtract the newly created body from the part you want countersunk.