#7 x 2-1/4" Simpson Strong-Tie DWP T15 Trim Head Wood Screw - 316 Stainless Steel, Pkg 85 Daggerz Pocket Hole Screws It also includes obround holes

It also includes obround holes spaced 3" apart for I-joist purlins and square holes spaced to accommodate the narrow face of 2x solid-sawn purlins

making it more flexible than many traditional expansion anchors

(6) STN22 Hex-Head Washers

or conduit

#7 x 2-1/4" Simpson Strong-Tie DWP T15 Trim Head Wood Screw - 316 Stainless Steel, Pkg 85 Daggerz Pocket Hole Screws It also includes obround holesThe Simpson Strong Tie Deck Drive DWP Trim Head Wood SS Screw is built for outdoor projects that demand long lasting performance and a clean finish. Made from 316 stainless steel for reliable corrosion resistance, its the go to fastener for decks, docks, fences, and other exterior wood applications. Engineered for efficiency, this screw features a sharp point and unique box thread design that drive smoothly into wood, engineered lumber, and polymer