Simpson #9 x 2-1/2" SD Connector Screw Galvanized SD9212 PACK:500 Pk What is the purpose of

What is the purpose of the concealed header flanges on this hanger

low-profile appearance rather than sitting visibly on top of the slab

MPN: MBHA3

For straight flush trimming of laminates

Simpson #9 x 2-1/2" SD Connector Screw Galvanized SD9212 PACK:500 Pk What is the purpose ofModel No. SD9212 Coating Material Mechanically Galvanized, Class 55 Screw Size #9 Length (in.) 2 1 2 Drive Type 1 4 in. Hex Head Type Hex Head Point Type Sharp Point The Strong DriveSD Connector screw is specifically designed to replace nails in certain Simpson Strong Tieconnectors and is the only screw approved for that application. The load rated SD screw has been tested and approved for use in many popular Simpson Strong Tie products. In certain