On Saturday, February 3, 2018 at 8:21:17 PM UTC-8, Charles Longley wrote:
The head diameter on that screw is too big. I need a 4 mm screw with a head diameter around 6.5 mm. I am not sure what the countersink angle is. Looks closer to 100 though.

That head diameter is totally unrealistic; it should be about twice the shaft diameter. Grind the head down if you want it less, but you will have a very small shoulder as a result.

Tom