Ideal for any project involving light gauge sheet metal, awnings, door and window frames, gutters, sheds. A self-drilling screw, or tek screw, is similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole.
A lag screw is similar to a wood screw, but generally is much larger with a hexagonal head.Lag bolts are designed for securely fastening heavy timbers to one another, or to fasten wood to masonry or concrete..
A lag screw is similar to a wood screw, but generally is much larger with a hexagonal head..Lag bolts are designed for securely fastening heavy timbers to one another, or to fasten wood to masonry or concrete.