SDS screws are heavy-duty connector screws developed specifically for structural wood-to-wood connections and metal connector hardware, which means they are engineered to carry real load rather than simply hold trim in place. Unlike a common wood screw that is designed mainly for light fastening, an SDS screw combines a large shank diameter, an aggressive thread profile, and a rugged hex washer head so that it can replace or supplement traditional bolts and lag screws in many framing situations. Builders choose these fasteners because they install faster than bolted connections, require no predrilling in most applications, and deliver predictable holding power when installed to a connector manufacturer's schedule. The 0.250 in. diameter body gives the screw substantial shear and withdrawal capacity, which is exactly what ledger boards, rim boards, and steel side plates demand. Because the Type-17 point cuts its own pilot path through the wood, installers avoid splitting and can drive the fastener close to board edges with far less risk. That combination of speed, strength, and reliability is why SDS screws have become a standard item on decks, docks, post-frame buildings, and engineered wood assemblies across North America and Europe.

Norvion Supply Chain (China) is a China-based supplier and exporter of SDS screws and a broad catalogue of structural fasteners, serving distributors, contractors, fabricators, and project procurement teams worldwide. The company positions itself as a sourcing partner rather than a simple trading desk, connecting overseas buyers directly with vetted fastener factories and qualified manufacturing partners in China's established hardware clusters. Buyers searching for wholesale SDS screws, bulk connector screws, or a dependable China fastener supplier can work with one account manager who handles specification, sampling, production, inspection, documentation, and shipping. That single point of contact matters when a project needs 25-box contractor packs one month and a 1,500-piece bulk pallet the next. Norvion's team also consolidates SDS screws with other construction fasteners, which reduces freight cost and simplifies customs paperwork for importers who would otherwise manage five or six separate shipments. You can review the company's wider fastener programme on theHome-1 product page and read the sourcing philosophy behind the business on the About Us page.

The first advantage Norvion brings to SDS screws is direct access to China fastener factories and qualified manufacturing partners rather than a long chain of middlemen. That direct relationship lowers landed cost, shortens the communication loop, and makes it far easier to resolve a technical question about thread geometry or coating thickness without waiting days for an answer. Because the team works in the same time zone as the production floor, production updates, sample photos, and inspection findings reach the buyer quickly and in usable detail. Competitive wholesale pricing is supported by transparent quotations that break down material, coating, heat treatment, packing, and freight so buyers can see exactly what they are paying for. Cost control for bulk orders is handled through consolidated raw material purchasing and repeat-order pricing that improves as annual volume grows. For importers who are used to vague quotes and surprise surcharges, this level of detail is a genuine competitive edge.

Quality control is where the sourcing model proves its value, because every batch of SDS screws can be verified before it leaves China. Norvion's process includes material verification to confirm the steel grade, dimensional checks on shank diameter, thread pitch, head size, and length, plus coating tests for the double-barrier finish used on corrosion-resistant variants. Batch traceability means that if a question ever arises months after delivery, the production records, inspection reports, and test data can be pulled and reviewed. Export expertise rounds out the package, covering commercial invoices, packing lists, certificates of origin, customs support, and sea, air, or express shipping to almost any destination port. OEM and ODM support allows custom lengths, coatings, head markings, cartons, and private-label branding so a distributor can sell the product under its own name. Responsive account management keeps contractors, distributors, and project buyers informed at every stage, from first enquiry to final delivery confirmation.

Norvion's flagship SDS screw is a 0.250 in. diameter structural wood screw designed for high-load connections, and it is built to the same dimensional envelope as the industry-standard connector screw that contractors already know. The Type-17 point features a sharp, notched cutting edge that starts quickly in sawn lumber and engineered wood while reducing the splitting pressure that a blunt point would create. A 3/8 in. hex washer head with an integrated washer distributes clamping force across a wider area, which protects the connector plate and improves the reliability of the finished connection. Buyers can specify a corrosion-resistant double-barrier coating for exterior and treated-wood applications or upgrade to Type 316 stainless steel for marine and high-moisture environments. In most assemblies the screw can be driven without predrilling, provided the installer follows the connector manufacturer's published requirements and the local building code. The correct replacement driver bit for this head is the BITHEXR38-R1, and Norvion can supply bits alongside the fastener order so crews are never short of the right tool on site.

Heavy-duty structural performance is the defining characteristic of these fasteners, and it shows up in wood-to-wood joints, engineered wood assemblies, and metal connector installations alike. The combination of a large shank, deep threads, and a washer head delivers holding power that lets designers reduce reliance on bolts in many framed connections. Corrosion resistance makes the product suitable for decks, docks, boardwalks, marine structures, and any exterior project exposed to rain, salt spray, or pressure-treated lumber. Consistent drive quality keeps installation fast, because low stripping and positive bit engagement mean fewer wasted screws and fewer damaged heads. Compatibility with common structural brackets, ledger connections, and retrofit repairs means one screw family can cover a wide range of jobs without stocking multiple specialities. Multiple lengths and bulk box quantities let a distributor tailor its inventory to local demand, and the ability to consolidate these fasteners with other construction screws keeps a single shipment working harder for the importer.

Length options cover the great majority of connector and ledger applications, giving buyers a single source for standard project requirements. Coating choices range from the double-barrier coating that resists corrosion in treated wood to Type 316 stainless steel for marine-grade durability. The drive type is a 3/8 in. hex, the head type is a hex washer head, and the point type is a notched Type-17 point for fast starts and reduced splitting. Standard packaging follows the industry norm, and custom cartons, labels, and private-label print are available on request for established programmes.

SDS screws appear in a remarkably wide range of structures, from residential decks, pergolas, and gazebos to outdoor living builds that must survive decades of weather. Marine decks, docks, jetties, and boardwalks rely on the stainless steel variants, where salt exposure would quickly destroy an uncoated fastener. Timber construction, fencing, and post-frame buildings use the screws for purlin-to-post, girt, and truss connections where bolting would slow the framing crew. Engineered wood assemblies and metal connector installations take advantage of the screw's ability to fasten steel hardware to laminated or composite lumber without crushing the material. Structural repairs, retrofits, and ledger-to-stud connections are prime candidates, because the installer can drive a screw into an existing assembly with minimal disruption. Sole-to-rim, steel side-plate, and rim board applications round out the list, all of them high-load joints where the fastener's shear capacity is doing real work.

Allowable shear loads are published for the major North American lumber species groups, including Douglas Fir-Larch, Southern Pine, Spruce-Pine-Fir, and Hem-Fir, which lets engineers match the screw to the wood actually being used on site. Reference allowable withdrawal loads and ledger-to-stud shear values give designers the data they need to confirm a connection without running a new test programme for every project. Spacing requirements for sawn lumber deck ledger-to-rim board connections follow the International Residential Code, and Norvion can supply the reference information needed to document compliance in a submittal package. Steel side-plate application data is equally important for retrofit and repair work, where the screw passes through metal hardware before engaging the wood. Buyers who need to compare specifications with familiar North American brands often research terms such as simpson strong tie sds screws or the shorter simpson sds, and Norvion's technical team can explain how its dimensional and load data maps to those widely referenced tables. Quality documentation and independent test reports are available on request, and some procurement teams also ask for kh ez hilti style equivalents when they are evaluating alternative suppliers for a large project. Providing that paperwork up front removes friction in the approval process and shortens the time between enquiry and purchase order.

Ordering is structured around wholesale and project-based quantities, so a first-time buyer can start with a modest trial order and scale to container volumes as confidence grows. Custom sizes, coatings, head markings, and packaging are all available, which allows a distributor to differentiate its own brand in a competitive market. OEM and private-label programmes cover everything from printed cartons and colour-coded storage boxes to branded driver bits included in the pack. Sample requests are welcome, and the team will advise on MOQ guidance and realistic production lead times based on the finish and length mix required. Shipping can be arranged by sea freight for cost efficiency, air freight for urgent replenishment, or express courier for samples and small emergency orders. Incoterms, payment terms, and full export documentation support are handled by an experienced team that understands the paperwork importers need at destination. If you would like to discuss a specification before committing to volume, theSupport page has a direct contact form for technical and commercial enquiries.

China-based sourcing with vetted fastener manufacturers gives Norvion the ability to match each order to the factory best suited for that material, coating, and volume. Cost-effective production is achieved without compromising quality, because the inspection protocol is applied consistently regardless of which partner line runs the batch. Consolidation of SDS screws with other construction fasteners means an importer can fill a container with a complete structural fastener range instead of paying for multiple shipments. Export-ready packaging and labelling ensure the cartons arrive in sellable condition with the correct barcodes, warnings, and country-of-origin markings. Dedicated support for distributors, contractors, and procurement teams keeps communication clear, whether the buyer needs a single technical answer or a full project submittal package. To see the breadth of the company's manufacturing and quality capabilities, theHome page and the News section give a good overview of recent activity and factory strengths.

Correct installation is what turns a good fastener into a reliable structural connection, so a few simple habits are worth repeating on every job. Use a low-speed 1/2 in. drill fitted with a 3/8 in. hex driver, because high-speed impact driving can shear heads and over-torque the connection. Keep the driver bit fully seated in the hex recess to avoid cam-out, which damages the head and wastes both time and fasteners. Follow the structural plans and the connector manufacturer's requirements for screw quantity, spacing, and edge distance rather than substituting a personal rule of thumb. Choose stainless steel or coated SDS screws for exterior work, treated lumber, and any application where moisture will be present. Finally, store the screws in a dry place and inspect the coating before installation, since a damaged finish on a coated screw reduces its corrosion protection.

SDS screws are used for high-load structural connections such as ledger-to-rim board joints, steel side plates, sole-to-rim connections, deck framing, and metal connector installations. They replace or supplement bolts and lag screws in wood-to-wood and wood-to-metal assemblies, and they are also widely used for structural repairs and retrofits.

In practice, yes. The term structural connector screw describes the category, while SDS screws are one of the best-known product families within it. Both names refer to a large-diameter, hex-washer-head fastener designed to work with steel connector hardware and engineered wood.

Norvion supplies SDS screws in 1 1/2 in., 2 in., 2 1/2 in., 3 in., 3 1/2 in., 4 1/2 in., 5 in., 6 in., and 8 in. lengths with a 0.250 in. diameter. Finish options include a corrosion-resistant double-barrier coating and Type 316 stainless steel for marine and high-moisture applications, packed in 25, 300, 1,500, or custom bulk quantities.

Yes. Norvion Supply Chain (China) is an export-oriented supplier, and bulk SDS screws can be shipped by sea freight, air freight, or express courier depending on urgency and volume. The team handles commercial invoices, packing lists, certificates of origin, and other export documentation required at destination.

Most applications do not require predrilling because the Type-17 point cuts its own path through sawn lumber and engineered wood. However, some hardwoods, dense engineered products, or specific connector instructions may call for a pilot hole, so the structural plan and the connector manufacturer's guidance always take priority.

You can submit an enquiry through the Support page with your required length, coating, box quantity, and destination port. Samples are available for evaluation, and the team will normally respond with pricing, MOQ guidance, and a realistic production timeline.

Lead time depends on the length, coating, and quantity ordered, and on whether the item is a standard stock specification or a custom OEM programme. Standard configurations typically move faster than private-label runs, and Norvion confirms a production schedule at the time of quotation so buyers can plan shipments accurately.

Reference allowable shear loads are published for Douglas Fir-Larch, Southern Pine, Spruce-Pine-Fir, and Hem-Fir, along with withdrawal values, ledger-to-stud shear data, and steel side-plate application data. Norvion can supply supporting documentation and test reports on request for engineering submittals.

Yes. The 0.250 in. diameter, 3/8 in. hex washer head, and Type-17 point are designed to work with common structural brackets, ledger connectors, and rim board hardware. Buyers who currently specify simpson strong tie sds screws or simpson sds equivalents can request dimensional and load comparisons before switching supply.

Norvion offers OEM and ODM support that includes custom cartons, printed labels, head markings, colour-coded boxes, and branded driver bits. This lets distributors build their own product line while relying on Norvion's manufacturing, inspection, and export infrastructure in China.

Norvion Supply Chain (China) combines vetted manufacturing partners, disciplined quality control, competitive wholesale pricing, and genuine export experience to serve distributors, contractors, and project buyers who need reliable heavy-duty connector screws. Whether the requirement is a modest trial order, a private-label programme, or a container of mixed structural fasteners, the team can quote, sample, inspect, pack, and ship with clear communication at every stage. Buyers comparing suppliers will find that the combination of material verification, batch traceability, and customization flexibility is what separates a dependable China SDS screw supplier from a simple price list. If you are ready to move forward, request a quote, ask for a free sample, or request the current catalogue, and the Norvion team will respond with pricing, MOQ guidance, and a production schedule tailored to your project.