XL- SS HWH SDS 8-18X3/4

Diameter: #8 Length: 3/4 Material: Stainless Steel Head Style: Hex Washer (Hex) Point Type: Drill Thread Size: 18 Thread Length: Full Hardness: 410 Type: Self-Drilling Screw Diameter 3: 11/32 Box of 65. 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. Ideal for any project involving light gauge sheet metal awnings door and window frames gutters sheds.