My thanks for your input.[thumbsup2]
Additional information:
There are a total of 8 screws (alloy steel), 2 on each quadrant 45° angle around two concentric parts (anodized aluminum). The surface that the countersink sits in is not flat but rather multiple angles approximating a cylindrical...
I'm hoping that you guys can provide a little insight.
I have a new component that is essentially the design child of an existing component. It is attached with flat head screws (82° angle) but the countersink that they sit in is 90°. I find that I have copied this mismatch in my new component...