Simpson Strong-Tie #12 x 2-1/2" Self-Drilling Screw with Wings, Flat Head - 410 Stainless Steel, Qty. 1,800 Roof Boots The Strong-Tie HUC810 concealed flange

The Strong-Tie HUC810 concealed flange hanger features a G90 Galvanized coating and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153

Drive anchor until head is flush against fixture

The Simpson CCQ98SDS2

Lumber Size: Intended for use with 4-1/2x beams and 4x posts/columns

redesigned Drop-In internally threaded anchor that provides easier installation into base materials

Simpson Strong-Tie #12 x 2-1/2" Self-Drilling Screw with Wings, Flat Head - 410 Stainless Steel, Qty. 1,800 Roof Boots The Strong-Tie HUC810 concealed flangeWhen you need to fasten wood, plywood or fiber cement board directly to steel framing without pre drilling, this Simpson Strong Tie F12C250FDB 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