Simpson ECC3 1 4 4HDG End Column Cap Hot Dip Galvanized , Made to Order Non Returnable Stainless Steel Large Diameter Concrete Screws They feature a large washer They feature a large washer head for exceptional holding power and a bold thread design that bites quickly into wood The self drilling point eliminates the need for pilot holes while the hex washer head provides strong driving stability and a flush The Simpson ECC3 1 4 4HDG End Column Cap Hot Dip Galvanized enhances the strength and stability of your construction projects Connection Type: Provides strong end of beam connection for column to beams and the extended area of the column seat offers additional surface area of bearing to distribute the load