Simpson Strong-Tie #12 x 2" Self-Drilling Screw with Wings, Flat Head - 410 Stainless Steel, Qty. 1,000 Collated Wood Deck Screws Grips the Heli-Tie fastener and

Grips the Heli-Tie fastener and helps provide accurate installation results

The Simpson Strong-Tie® Hollow Drop-In Anchor (HDIA) is an internally threaded

Each 350-count pack covers approximately 100 sq

facilitates easier penetration

normal-weight concrete and lightweight concrete while the internally threaded anchor allows for easy bolt removal

Simpson Strong-Tie #12 x 2" Self-Drilling Screw with Wings, Flat Head - 410 Stainless Steel, Qty. 1,000 Collated Wood Deck Screws Grips the Heli-Tie fastener andWhen you need to fasten wood, plywood or fiber cement board directly to steel framing without pre drilling, this Simpson Strong Tie F12C200FDM Self Drilling Flat Head Screw With Wings delivers the performance you expect. Wings create a clearance hole in the top material so the shank will not ride up, then break off as the drill point engages steel. The flat countersunk head offers a clean, flush finish and the full length machine screw threads provide