Stainless Steel Countersunk Screws is a type of fastener that is sits as close to the surface of the material it occupies. Typically, Stainless Steel Countersunk Wood Screws are used in such a way that they can be covered easily with either a screw cap or piece of wood. Other applications of the M4 Stainless Steel Countersunk Screws include places where there is a need for the fastener that does not protrude so other objects can rest upon it stably. Similarly, the Stainless Steel Countersunk Coach Screws used to fasten to another object.