Simpson Strong-Tie #10 x 1-3/4" Strong-Drive PPHD Sheathing-To-Steel Screw - Yellow-Zinc Coated, Qty. 4,000 Flat Head 410 Stainless Steel Concrete Screws Flexible design: Roofjack size accommodates

Flexible design: Roofjack size accommodates pipes from 4-1/4" - 7-3/4"

leak-free seal

The 1 3/8" length pin can be used for 1/2"–3/4" thick plywood

To achieve the best results

Simpson Strong-Tie #10 x 1-3/4" Strong-Drive PPHD Sheathing-To-Steel Screw - Yellow-Zinc Coated, Qty. 4,000 Flat Head 410 Stainless Steel Concrete Screws Flexible design: Roofjack size accommodatesFast and reliable for attaching sheathing or sub floor panels to steel framing, the Strong Drive PPHD134B1016 4K PPHD Sheathing to CFS Screw is engineered to drill through panel layers and into cold formed steel (CFS) framing without pre drilling. With its longer #5 pilot point, fine thread design, flat head and six lobe drive, this screw is built to deliver strong engagement, clean seating and efficient installation for professionals and DIYers