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Engineered for uncompromising structural integrity, Type 17 Hex Flange Head Timber Screws are specialized, heavy-duty fastening solutions designed to deliver exceptionally strong and secure timber-to-timber connections. Unlike standard fasteners, these screws feature an integrated six-sided hexagonal head with a built-in flange. This unique geometry acts as a built-in washer, distributing the clamping load over a wider surface area to prevent the head from crushing into the wood fibers during high-torque applications.
Manufactured from high-strength carbon steel or premium 304/316 stainless steel, these screws are built to withstand extreme mechanical stress. The defining characteristics include a precision-milled Type 17 drill point for rapid, splinter-free insertion, and an aggressively twisted coarse shank that efficiently clears wood chips as it drives. Fortified with Class 4 hot-dip galvanizing or advanced Ruspert surface coatings, they offer ultimate defense against harsh outdoor and marine environments. When driven with a hex socket bit on a high-powered impact tool, they provide a deeply satisfying, locked-in grip that vastly outperforms traditional wood screws in both torque capacity and longevity.
These screws are the definitive choice for structural timber applications, offering exceptionally high pull-out values and unyielding holding power. To guarantee 100% structural-grade reliability for large-scale procurement, every production batch is subjected to rigorous mechanical assessments, including strict torque testing and hardness evaluations. This ensures that each fastener can bear significant shear and tensile loads without snapping or deforming under pressure.
Efficiency on the job site is paramount. These fasteners feature a specialized Type 17 slash point combined with an aggressive coarse thread. This self-drilling design acts like a miniature drill bit, slicing cleanly through dense timber fibers rather than forcing them apart. This allows for rapid penetration and drastically reduces the risk of timber splitting, effectively eliminating the labor-intensive need for pre-drilling pilot holes in the vast majority of softwoods and medium-density hardwoods.
Designed to defy the elements, these screws are treated with advanced, corrosion-resistant platings such as heavy-duty galvanization or multi-layered Ruspert coatings. Verified through intensive salt spray testing, these finishes create an impenetrable barrier against moisture, chemical runoff, and atmospheric oxidation. This makes them perfectly suited for external use in harsh conditions, including coastal regions and chemically treated lumber applications.
We provide deep customization capabilities to meet the exact specifications of diverse engineering projects. This includes tailored head dimensions, specific thread lengths, specialized surface treatments, and exclusive brand packaging. Supported by a robust manufacturing infrastructure capable of producing millions of units daily, we offer flexible packaging solutions ranging from bulk cartons and heavy-duty pallets to retail-ready display boxes. Furthermore, our facilities and products are fully compliant with ISO 9001, RoHS, and REACH international standards, ensuring authoritative regulatory compliance for global distribution.
| Surface Finishing | Galvanised |
| Size | Upon Request |
| Head | Hex Flange |
| Thread | Coarse Teeth |
| Point | Type 17 |
| Used for | Timber Sections, Battens and Sheets and Fixing of |
| Transport Package | Pallet |
| Specification | M6, M8, M10 |
| Trademark | OEM, ODM, Donghuang |
| Origin | Zhejiang, china |
| HS Code | 731814 |
These fasteners are the backbone of robust wooden frameworks. They are ideal for joining heavy timber to timber in a wide variety of structural projects, from erecting load-bearing house framing and retaining walls to assembling heavy-duty transport pallets and industrial crates. The coarse thread ensures a permanent bite into the wood grain, preventing loosening over time.
Because of their exceptional weather-defying properties, these screws excel in exterior environments. The high corrosion resistance—achieved through rigorous galvanization or specialized environmental coatings—makes them perfect for constructing durable outdoor decks, securing heavy fencing panels, building staircases, and anchoring landscaping sleepers that are constantly exposed to soil moisture and rain.
When securing exterior envelopes, reliability is non-negotiable. Their sharp, self-drilling Type 17 point and wide flange head make them highly suitable for attaching roofing battens, corrugated sheets, and heavy cladding materials directly to wooden structural supports. The flange head acts as a protective shield, sealing the insertion point and preventing material tear-through during high wind loads.
Beyond pure timber applications, they are incredibly versatile for mixed-material assembly. The flat underside of the hex flange provides a perfect mating surface for securing metal brackets, gate hinges, post supports, and steel plates to wooden surfaces, ensuring a flush, vibration-resistant fit without the need for supplementary washers.
Achieving a flawless, structural-grade connection requires selecting the right size and type of screw for the specific density of the material being joined. These hex flange timber screws are specifically engineered for tool compatibility, perfectly adapting to standard 5/16" or 3/8" hex socket bits. Because they are designed to handle extreme rotational force, they should be driven using high-torque impact drivers or heavy-duty power drills, which significantly boosts batch installation efficiency for large-scale contracting work.
A: There is a significant difference in both shape and engineering between wood screws and drywall screws, dictated by their intended materials. Wood screws are designed with a thicker, more durable shank and relatively less sharp heads (often countersunk or flanged) to draw pieces of timber together tightly. Generally speaking, traditional wood screws feature a smooth upper shank (half-threaded) to prevent the top piece of wood from catching, allowing for a tighter clamping force. In contrast, drywall screws have a distinct bugle head to prevent tearing the paper face of drywall, are typically full-threaded, and possess a much sharper point for piercing metal studs. Moreover, the threads of drywall screws are thinner and more brittle, whereas wood screws have thicker, deeper threads designed to maximize pull-out resistance in natural wood grain.
A: Wood screws and masonry screws serve entirely different structural purposes and possess distinct characteristics in thread design, material hardness, and application methods. Wood screws are engineered with aggressive self-tapping threads designed to slice into and grip fibrous organic materials. Masonry screws (often called concrete screws), on the other hand, are manufactured from specially hardened steel and are equipped with alternating high-low self-cutting threads that physically tap grooves into dense, abrasive materials like concrete, brick, or cinder block. Because they must cut into stone-like materials, masonry screws undergo a different heat-treatment process, giving them higher shear strength and hardness compared to standard wood screws, which are designed to flex slightly with the natural expansion and contraction of timber.
A: While it is physically possible, it is not always recommended for structural applications. On some softer woods (like pine or cedar), sheet metal screws can be used for light-duty installation because they are fully threaded and have a sharp point. However, their thread pitch is much finer than that of a dedicated wood screw. If applied to hardwood materials without a proper pilot hole, the fine threads can easily clog with wood dust, leading to excessive friction that can cause the screw to snap or easily lead to severe cracking and splitting of the wooden board. For any load-bearing timber connection, a dedicated coarse-thread wood screw is always the superior choice.
A: Over-tightening can strip the wood fibers, leaving the screw spinning loosely. Fortunately, there are many effective ways to fix stripped screw holes to restore their holding power. If the hole is only slightly loose, you can insert a few wooden toothpicks or matchsticks coated in wood glue into the hole to fill the void, snap them off flush, and then reinstall the wooden screw once dry. If the hole is significantly enlarged, you will need to drill it out cleanly and plug it with a glued wooden dowel, creating a fresh, solid surface to drive a new screw into. For quick, non-structural fixes, you can also use specialized wood epoxies or hot melt adhesive to fill the screw holes, waiting for complete solidification before carefully driving the screw back in.
