Review on Durafast - High-Quality Hard-to-Find Fastener 014973170578 - 12 Piece Set by Justin Sherman

These are ideal for stuffing anchor bolts when removing storm screens after a storm. They protect anchor threads from rust while your screens are stored until you need them for the next storm. The #20 thread is the same thread as the stainless steel screws that hold the screens in place during storms. I use plastic mounting screws that are half an inch shorter than the 1 1/2 inch stainless steel screws that hold the screens in place so that over tightening doesn't break the plastic screws in the anchors.