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 high-torque, heavy-duty fastening applications in fields such as construction, metalworking, and industrial assembly. These screws combine drilling, tapping, and fastening functions into one, eliminating the need for pre-drilling and thus significantly reducing installation time and labor costs. They are made from high-quality heat-treated carbon steel and feature a corrosion-resistant coating. The hexagonal washer head design provides high clamping force and can be easily installed using a standard wrench or socket, making it ideal for structural connections, steel frame structures, and outdoor applications that require high reliability.
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
Exceptional Durability and Corrosion Resistance: A variety of surface treatment options are available, from standard galvanizing to heavy-duty hot-dip galvanizing or proprietary coatings, to meet the required corrosion resistance levels for indoor, outdoor, or highly corrosive environments.
Integrated Installation: The hardened, integrated drill bit easily drills through steel and other metals, allowing for drilling and tapping in a single step without pre-drilling. This simplifies the workflow and reduces the tools required on-site.
Exceptional Durability and Corrosion Resistance: A variety of surface treatment options are available, from standard galvanizing to heavy-duty hot-dip galvanizing or proprietary coatings, to meet the required corrosion resistance levels for indoor, outdoor, or highly corrosive environments.
Broad Material Compatibility: Designed for connecting a variety of materials, including cold-rolled steel, stainless steel (with appropriate drill bit selection), aluminum, and for connecting wood or other materials to metal structures.
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 Hex Head Self Drilling Screws?
Stable and reliable quality: Each batch of products undergoes rigorous testing for hardness, coating adhesion, dimensional accuracy, and torque-tension performance to ensure reliable results in practical applications.
Superior performance: Optimized drill bit geometry ensures quick starting, smooth drilling, efficient chip removal, and reduced drill bit runout for precise positioning.
Economically efficient solution: Reduce overall installation costs by minimizing drilling steps, accelerating assembly speed, and providing long-lasting durability (thereby minimizing maintenance and replacement).
Professional technical support: Our team provides comprehensive guidance, including drill bit 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.
