#7 x 1-5/8" Simpson Strong-Tie #1 Square Drive Trim Head Wood Screw - 305 Stainless Steel, Pkg. 5 Lb.Simpson Strong Tie Trim Head Deck Screws are ideal for decking applications where strength meets a clean finish. The square drive provides a secure, slip free engagement and ensures consistent driving, while the low profile trim head sits flush with the surface for a polished appearance. A Type 17 point allows for quick starts, and coarse lower threads pull deck boards tightly to joists for a solid hold that lasts. For maximum corrosion resistance,