FIX-SS4-4 is a type of self-tapping screw. It is made of stainless steel and is used to improve the strength and integrity of a joint. It can be used in a variety of applications, such as attaching drywall, adding trim to furniture, or fastening two pieces of metal, wood, or plastic together. The screw is designed with a sharp, pre-drilled point at the tip, as well as four threads that provide extra security and a smooth, neat finish.