AS3566.2 Class 3 Self Drilling Screws with EPDM Washer — ISO 10666 Roofing & Wall Cladding Fasteners
First and foremost, Tarco Industry manufactures AS3566.2 self drilling screws with EPDM washers in our own factory. In other words, we are not a trading company. We are the production source.
As a result, we deliver factory-direct pricing, consistent coating quality, and fast delivery. This applies to all your metal roofing and wall cladding projects.
In addition, we produce these self-drilling roofing screws to comply with AS3566.2 Class 3 corrosion resistance requirements. We also manufacture Class 4 versions for severe marine environments.
Furthermore, our screws meet the mechanical properties of ISO 10666. They also comply with SAE J78, DIN 7504, and JIS B 1125. Therefore, builders worldwide trust our screws. They use them to attach metal roofing, wall cladding, and sandwich panels to steel purlins and rails.
Technical Specifications of AS3566.2 Self Drilling Screws
To begin with, we manufacture our AS3566.2 self drilling screws in a range of sizes. The table below summarizes the standard product range.
| Screw Size | Head Type | Drill Point | Washer | Corrosion Class | Typical Application |
|---|---|---|---|---|---|
| 12g × 25mm | Hex Washer Head | #2 / #3 | EPDM Bonded | Class 3 | Metal roofing to steel purlin |
| 12g × 50mm | Hex Washer Head | #3 | EPDM Bonded | Class 3 | Cladding panels to steel frame |
| 12g × 65mm | Hex Washer Head | #3 / #4 | EPDM Bonded | Class 3 | Sandwich panel to steel structure |
| 12g × 100mm | Hex Washer Head | #4 / #5 | EPDM Bonded | Class 4 | Heavy cladding to thick steel |
| 14g × 50mm | Hex Washer Head | #3 | EPDM Bonded | Class 4 | Coastal roofing & marine exposure |
Material & Coating Specifications for AS3566.2 Self Drilling Screws
- To begin with, we use C1022 carbon steel as the standard base material. This ensures high strength for our self drilling screws.
- Moreover, we apply a zinc-tin alloy base coat through mechanical galvanizing. This achieves a minimum thickness of 25μm for Class 3 and 45μm for Class 4.
- Additionally, we finish Class 3 and Class 4 screws with an organic ceramic top coat. This seals the base coat and slows zinc consumption.
- Furthermore, our screws meet the surface hardness requirement of ≥530 HV per ISO 10666. We control core hardness within 320–400 HV to ensure ductility.
- For special orders, we supply martensitic stainless steel (A2/A4) self drilling screws for extreme corrosion environments.
- Finally, we offer OEM & ODM. We customize screw size, head type, drill point number, thread pitch, coating class, and washer color.
AS3566.2 Corrosion Classes Explained — Class 3 vs Class 4
In fact, AS3566.2 specifies four corrosion resistance classes for self-drilling screws. Furthermore, understanding the difference between Class 3 and Class 4 is critical. It helps you select the right screw for your project environment.
| Class | Intended Environment | Minimum Coating Thickness | Corrosivity Category (ISO 9223) |
|---|---|---|---|
| Class 1 | General internal use | — | — |
| Class 2 | Internal with condensation | 12 μm | — |
| Class 3 | External mild & moderate industrial or marine | 25 μm | C2 / C3 |
| Class 4 | Severe marine environment | 45 μm | C4 |
Therefore, if your project is in a general urban area, AS3566.2 Class 3 screws provide adequate protection.
Conversely, if your project is near the coastline, we recommend Class 4 screws. They offer superior long-term performance.
EPDM Bonded Washer — Long-Term Waterproof Sealing for Metal Roofing
In addition, the EPDM bonded washer is a critical component of our screws. Furthermore, EPDM rubber provides exceptional resistance to UV radiation and ageing.
- First, the EPDM sealing washer creates a watertight seal around the screw head. This prevents water ingress at the fastener penetration point.
- Second, our EPDM washers are UV resistant and temperature resistant. They maintain sealing performance from -40°C to +120°C.
- Third, the special shape of the washer ensures proper seating on the outer cladding material. This guarantees a reliable seal even on profiled sheets.
- Finally, we offer EPDM washers in a range of colors. These include Grey, Colorbond® matching colors, and Monument.
About Our Factory — Direct Manufacturer of AS3566.2 Self Drilling Screws
In fact, Tarco Industry operates a modern manufacturing facility. We dedicate it to the production of AS3566.2 self drilling screws and roofing & cladding fasteners.
Furthermore, we complete every step in our own factory. This includes wire drawing, thread rolling, heat treatment, coating, and washer assembly. Consequently, we do not outsource production. We do not act as a middleman.
In addition, we equip our factory with advanced cold heading machines and automated thread rolling lines. As a result, we produce AS3566.2 compliant screws with consistent drill point geometry.
Therefore, whether you need Class 3 or Class 4 screws, Tarco Industry can produce them directly for you.
Factory Direct Advantages
- First, we are a Manufacturer, Not a Trader. You buy directly from Tarco Industry production lines, eliminating middleman markups.
- Second, we handle In-House Production. We produce screws, washers, and assemblies all under one roof for full quality control.
- Third, we welcome OEM & ODM. We customize screw dimensions, head markings, coating classes, and washer colors.
- Fourth, we maintain Bulk Production Capacity. We ensure stable output for large roofing and cladding orders.
- Finally, we provide Factory Price. We offer competitive direct pricing for distributors, contractors, and fabricators.
Why Choose Our AS3566.2 Self Drilling Screws?
- For example, our screws offer Self-Drilling Efficiency. The drill point automatically drills its own core hole and forms the mating thread. You need no pre-drilling.
- In addition, they provide AS3566.2 Class 3 & Class 4 Protection. The zinc-tin alloy coating delivers proven corrosion resistance for external applications.
- Moreover, they feature EPDM Bonded Washer Sealing. The self-vulcanizing washer creates a durable watertight seal.
- Furthermore, they ensure ISO 10666 Mechanical Performance. Controlled hardness delivers reliable drilling and torsional strength.
- As a result of their Full Standard Compliance, our screws meet AS3566.2, ISO 10666, SAE J78, and DIN 7504. This makes them suitable for global projects.
- Finally, we provide Direct Factory Support. Tarco Industry provides technical guidance, samples, and custom production.
How to Install AS3566.2 Self Drilling Screws with EPDM Washers
- First, select the correct screw. Choose the right diameter, length, drill point, and corrosion class for your project.
- Then, position the screw. Place the screw perpendicular (90°) to the metal substrate. This ensures proper seating of the EPDM washer.
- Next, drive the screw. Use a screw gun with a magnetic driver. Set the torque to the lowest setting to start.
- After that, control the torque. Stop driving when the EPDM washer is firmly seated. Do not over-tighten, as this can damage the washer.
- Finally, verify the installation. Check that each screw is properly seated and the EPDM washer is evenly compressed.
Applications & Industries for AS3566.2 Self Drilling Screws
- For instance, in metal roofing, contractors use our screws to fix corrugated steel sheets to purlins.
- Also, in wall cladding, they attach architectural cladding panels and sandwich panels to steel frames.
- In addition, for sandwich panel construction, our longer screws secure insulated panels without crushing the core.
- Furthermore, in industrial buildings, they fasten metal roofing for warehouses, factories, and agricultural sheds.
- Lastly, in coastal projects, our AS3566.2 Class 4 screws provide the corrosion resistance required near the shoreline.
Quality Assurance & Certifications
Furthermore, Tarco Industry manufactures our AS3566.2 self drilling screws under strict quality control. They comply with AS3566.2, ISO 10666, and SAE J78.
As a result, we perform dimensional inspection, drill point testing, and coating thickness verification. We test every production batch before shipment.
- Additionally, we offer certifications including ISO 9001, CE, and SGS.
- Moreover, our production capacity reaches 20 million pcs per month.
- Also, we set the MOQ at 50,000 pcs (negotiable for sample orders).
- In terms of packaging, we offer bulk cartons, small boxes, and custom packaging.
- Finally, we deliver within 15–20 business days after order confirmation.
Request a Quote for AS3566.2 Self Drilling Screws with EPDM Washers
In conclusion, we are Tarco Industry. We are a direct manufacturer of AS3566.2 self drilling screws and EPDM bonded washers.
Therefore, because we produce in our own factory, we offer competitive factory-direct pricing. In other words, you deal with no middleman and no trading company markup.
📩 Contact Tarco Industry now for a free sample or bulk quotation. Additionally, our engineering team can assist you in selecting the right screw specifications.
Tarco Industry — We Produce, We Manufacture, We Supply Directly.
