General description These TIMCO Window Fabrication Screws are designed for versatile applications, allowing for the fitting of various hardware to frames that feature steel or aluminum reinforcements. Their construction from martensitic stainless steel makes them ideal for use in corrosive environments. Technical specifications Material: Martensitic stainless steel Finish: Silver organic Dimensions: 3.9 x 19 mm Type: Countersunk with ribs Thread: Self-tapping Point: Self-drilling Usage These screws are particularly effective for securing hardware in window fabrication, ensuring a strong and reliable fit in various frame materials.