Is there any solvent or method to remove screws that have been powder coated? The powder coat adhesion is so good that I keep stripping the screw heads.
Because of powder coating’s high resistance to solvent, finding one to break this bond may be difficult. You can try to cut the coating in the area of the screw head before turning the screw.
I would suggest that your supplier install the stainless screws after coating, so that they can be easily removed by you. I know they won’t match in color, but stainless looks great uncoated.