Simpson #7 x 2-1/4" Gray, Trim-Head Screw, 6-Lobe Drive 305 Stainless Steel Crack Sealer The stainless steel material resists

The stainless steel material resists oxidation and surface degradation that would compromise a standard coated screw over time in those conditions

SDS Screw Fastening: Strong-Drive SDS Heavy-Duty Connector screws provide a lower profile than standard through bolts while attaching to a greater net section area of the column

What types of decking are these trim-head screws designed for

Applications in seismic (earthquake) or high-wind load zones requiring increased uplift resistance

Fiberglass panel and enclosure fastening

Simpson #7 x 2-1/4" Gray, Trim-Head Screw, 6-Lobe Drive 305 Stainless Steel Crack Sealer The stainless steel material resistsSimpson #7 x 2 1 4" Trim Head Decking Screw in Gray with T15 6 Lobe Drive and Type 305 Stainless Steel finish is engineered for PVC and composite deck installations in marine or high exposure environments where superior corrosion resistance is essential. The low profile trim head virtually disappears into the decking surface for a clean, polished appearance, while the Type 305 stainless steel construction delivers long lasting performance against