203SS CSK Stainless Steel PVC Window Screw Rib 4.3x35mm (Box of 1000) - Durable Fasteners for Window Screens, Frames & Construction Projects

200 range window screws with a shallow countersunk head with ribs and a single deep thread and gimlet tip design for unreinforced frames. These screws have a Phillips recess and they are made from stainless steel and able to withstand 504 hours of salt spray testing.