Stainless Steel Hex Flange Head Self-Drilling Screws With Integrated Metal Rubber Washer

Our screws are professionally crafted with high-quality stainless steel, integrating heavy-duty Hex Flange Head, high-hardness Self-Drilling Point and integrated metal rubber composite washer, specially developed for outdoor waterproof and anti-leakage fastening scenarios. Different from ordinary drilling screws, the one-piece composite washer combines metal pressure-resistant layer and rubber sealing layer, which not only bears uniform locking pressure to prevent gasket damage, but also fills installation gaps tightly to block rainwater and dust penetration, solving the common problem of water leakage and loose connection of outdoor building fasteners. The integrated hex flange head provides large-area fitting pressure, which can perfectly cooperate with the composite washer to avoid gap displacement and ensure seamless fitting between the screw and the installation surface. The hardened self-drilling tip has strong cutting and penetrating performance, which can quickly drill through light steel plates, color steel plates, wood exterior wall panels and composite decorative plates, completing drilling, threading and sealing fixing in one step without pre-drilling. Supported by stainless steel rust-proof performance and rubber aging-resistant performance, these screws maintain stable waterproof, anti-leakage and anti-vibration effects in long-term outdoor wind, rain and sun exposure, serving as professional sealed fasteners for various outdoor construction and anti-leakage projects.

Key Features

- Integrated Composite Washer: Adopts metal and rubber one-piece composite structure, with metal layer for pressure resistance and rubber layer for waterproof sealing, dual-functional design to prevent water leakage, dust ingress and gap loosening.

- Hex Flange Head Design: Heavy-duty integrated flange head with large bearing area, evenly disperses locking pressure, tightly fits the washer and installation surface, avoids local pressure damage and improves connection tightness.

- High-Hardness Self-Drilling Point: Hardened drill tip with strong penetration and cutting performance, suitable for light steel and wood composite materials, one-step drilling and fixing without pre-processing, efficient and labor-saving.

- Waterproof & Anti-Aging Performance: The rubber washer features excellent aging resistance and compression resilience, not easy to harden or deform in outdoor environment, maintaining long-term sealing effect.

- Stainless Steel Material: High-standard stainless steel with excellent weather resistance and anti-rust performance, resisting outdoor wind and rain erosion, no rust or deformation, ensuring long-term stable fastening.

- Anti-Vibration & Anti-Loose: Sealed fitting structure and standard thread design effectively resist external vibration, avoid loosening caused by environmental changes, and ensure durable connection performance.

Applications

- Outdoor building exterior wall panel and roof fixing engineering

- Color steel plate, light steel structure waterproof fastening

- Building anti-leakage and waterproof sealing projects

- Vibration-prone equipment and facility fixing

- Outdoor garden facilities and enclosure installation