WhatsApp/Wechat: +86 15176702681
ADD: Yuelong Town Industrial Park, Tianjin, China
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Product Introduction
Our hex head self-drilling screws are designed for the most demanding structural and metalworking projects, integrating drilling and fastening into one seamless process. Eliminating the need for pre-drilling, they significantly reduce installation time and labor costs. The external hex head design allows for high-torque installation, providing strong and vibration-resistant clamping force, making them ideal for steel frame structures, metal roofing, and heavy equipment. These screws are made from hardened steel and are available with standard zinc plating or a premium heavy-duty coating for reliable long-term corrosion resistance and durability.
Product Specifications
| Parameter | Specification |
|---|---|
| Material | Medium/High Carbon Steel (Grade 1022A or equivalent), Quenched & Tempered |
| Finish / Coating | Electro-Zinc Plated (Yellow, White, Blue). Optional Hot-Dip Galvanized or Geomet® coating for extreme environments. |
| Corrosion Resistance | Standard: Meets ASTM B633. Enhanced coatings available for 500+ hours salt spray protection. |
| Head Style | Hex Washer Head (HWH) with built-in washer to distribute load and prevent pull-through. |
| Drive Type | External Hex (3/8", 1/2", M8, M10 compatible). Optional Flange Head or Hex Washer with Captive Washer. |
| Drill Point Style | #3 Point (Up to 10 Ga.), #4 Point (Up to 1/4"), #5 Point (Up to 3/8"). |
| Thread Type | Standard Spaced Thread, Hi-Lo Thread (for wood-to-metal), or Fine Thread options. |
| Shank | Fully Threaded. Partially threaded (serrated washer underhead) available for water-tight seal applications. |
| Standard Diameters | #10, 1/4", 5/16", 3/8" (or M5, M6, M8, M10). |
| Standard Lengths | 1" (25mm) to 8" (200mm). Custom lengths and diameters available. |
| Standards | Complies with ANSI, SAE, ISO, and major construction fastener specifications. |
Key Features & Benefits
Engineered Corrosion Defense: Offered with a complete range of protective finishes—from standard zinc plating to heavy-duty hot-dip galvanizing and advanced proprietary coatings—to match the exact corrosion resistance required for applications ranging from indoor use to harsh outdoor or industrial environments.
High-Torque Installation & Clamp Force: The external hex head is designed for use with impact drivers or sockets, enabling high-torque application to achieve a supremely tight, vibration-resistant connection capable of bearing substantial structural loads.
Integrated Washer for Performance: The built-in washer beneath the hex head distributes clamping pressure over a wider area to prevent surface damage and, when paired with a sealing washer, creates a reliable, weatherproof seal.
All-in-One Drilling Solution: The hardened, integral drill point cuts cleanly through steel and other metals, performing drilling and tapping in a single operation. This streamlines on-site workflows and reduces the number of tools required.
Extensive Material Versatility: Engineered for reliable fastening across a broad spectrum of materials, including cold-rolled and stainless steel (with correct point selection), aluminum, and for securing wood or other non-metallic materials to metal substructures.
Typical Applications
Metal Roofing and Wall Cladding (Primary Fastening): Used for directly fastening corrugated metal roof panels or standing seam metal roof panels and wall panels to structural supports.
Structural Steel and Metal Framing: Used for connecting steel channels, purlins, and beams in commercial buildings, mezzanine structures, and pre-engineered metal buildings.
Heavy Equipment and Trailer Manufacturing: Used for assembling agricultural equipment, truck bodies, utility trailers, and containers, applications requiring high shear strength.
General Industrial Manufacturing and Maintenance: Suitable for any application requiring strong, durable, vibration-resistant, and easy-to-install metal-to-metal fastening.
Solar Panel Mounting and Support Systems: Used for securing mounting rails and brackets to metal frames or roof structures.
Why Choose Our Roofing Screws?
Engineered for Performance: Optimized drill point geometry ensures fast starts, smooth drilling with efficient chip removal, and reduced bit walk for precise placement.
Consistent & Reliable Quality: Each batch is rigorously tested for hardness, coating adherence, dimensional accuracy, and torque-tension performance to ensure dependable results in the field.
Cost-Effective Solution: Reduces total installed cost by eliminating multiple drilling steps, speeding up assembly, and providing long-term durability that minimizes maintenance and replacement.
Expert Technical Support: Our team provides comprehensive guidance on point selection, driver settings, and coating recommendations to ensure optimal performance for your specific application and environment.
Commitment to Quality & Service
Our products are manufactured under a strict quality management system to deliver consistent performance and reliability. We are committed to being your trusted partner by providing solutions that enhance project efficiency, safety, and longevity. For detailed technical datasheets, volume pricing, or project-specific consultation, please contact our sales and engineering support team.
