Secure your drain grates to prevent displacement from heavy runoff flows, pedestrian and vehicular traffic, and to deter potential theft and vandalism. Our #6 X 1-3/4 in. Phillips flat head screws fasten down 12 in. square decorative plastic grates to 12 in. catch basin drains, risers, and low-profile adapters. These screws have a pointed tip and coarse threads that easily drive into pilot holes molded in the basin grate seat. Use our 40 ct. bag of stainless steel screws to help an important part of your stormwater management product function effectively.