Self-Drilling Fasteners for Metal Roofing / Siding / Gutters

Self-Drilling Fasteners Steel External Hex Head Washer Sheet Metal Roofing Screws Galvanized self-drilling roofing screws with EPDM gasket washers for fastening sheet metal and exterior roofing applications. These self-drilling fasteners are designed for secure attachment in sheet metal roofing applications. Each screw features galvanized metal construction, an external hex head, and an EPDM gasket washer to help create a tight, weather-resistant fastening point. Product Highlights Fastener Type Self-Drilling Designed for sheet metal fastening Material Galvanized Metal screw construction Washer Type EPDM Gasket washer included Pack Quantity 250 Pcs Bulk fastener pack Key Features Self-drilling design Designed to drill into compatible sheet metal materials without requiring a separate pilot hole in many applications. External hex head 5/16 in hex head allows for secure driving with the proper hex driver or socket attachment. EPDM gasket washer Integrated EPDM washer helps seal the fastening point and reduce water intrusion around the screw. Galvanized metal construction Galvanized finish helps improve corrosion resistance for exterior roofing and sheet metal applications. Product Specifications Material Galvanized Metal + EPDM Gasket Head Type External HEX Head — 5/16 in Quantity 250 pieces per pack Recommended Use Sheet metal roofing, exterior metal panels, trim fastening, and compatible roofing assemblies. Use the correct 5/16 in hex driver and avoid over-tightening. The EPDM washer should compress enough to seal, but not so much that it deforms or squeezes out. Always confirm screw length, substrate compatibility, spacing, corrosion rating, and local installation requirements before use in roofing or exterior applications.