NDS 229 #8 x 1" Stainless Steel Phillips Flat Head Screw, fasten down Spee-D® Channel standard plastic, galvanized steel, and decorative iron grates to Spee-D channel drains, and 3 in. Pro Series Channel™ grates to 3 in. Pro Series channel drains. These screws have a pointed tip and coarse threads that easily drive into the Spee-D Channel grate seat, and into pilot holes molded in the 3 in. Pro Series Channel grate seat. Use our stainless steel screws to help an important part of your stormwater management product function effectively. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.