Roofing Screw & Self Drilling Screw Manufacturer

Since 2008, RDF Fastener has been manufacturing roofing screws and a wide range of self drilling screws, engineered for both steel-to-steel and steel-to-timber applications.

We offer a variety of surface treatment options—including zinc-tin mechanical galvanizing, Ruspert, and zinc flake coating—to meet the corrosion resistance requirements of the Australian AS 3566 Class 3 and Class 4 standards.

To better support our Australian customers, we have established a fully stocked warehouse in Sydney. With over 1,000 SKUs available—including an extensive selection of roofing screws—we ensure fast, reliable delivery and stable supply to meet urgent project timelines and diverse product needs.

1. Reduced Tip Roofing Screw

Application

The reduced-tip roofing screw is specially designed for fastening metal roofing to light steel battens and is also suitable for soft wood timber applications.

The reduced self drilling tip enhances pull-out strength, especially when fixing into light steel ranging from 0.42 mm to 1.5 mm thick.

Coated with zinc mechanical plating in accordance with the AS 3566 standard, the screws meet Class 3 and Class 4 corrosion resistance requirements, making them ideal for use in marine and industrial environments.

Features and Benifits

Reduced self drilling tip design provides high pull-out strength in light steel batten applications.
Mechanical zinc coating compliant with AS 3566 Class 3 and Class 4 standards, meeting the corrosion resistance requirements of the Australian market.
High-quality EPDM sealing washer minimizes the risk of water ingress in roofing fastening systems.

Our Roofing Screw & Self Drilling Screw Series

2. Painted Hex Head Roofing Screw

Application

RDF painted hex head roofing screws are specifically designed for fastening metal roofing sheets to steel or timber structures. Ideal for both residential and commercial roofing applications, these screws feature a durable painted finish that matches roofing panel colors, ensuring a clean and aesthetically pleasing installation. Each screw comes pre-installed with a weatherproof EPDM seal to provide superior protection against water ingress and harsh outdoor conditions.

Features and Benifits

Available in a wide range of colors, the painted hex heads are finished to a high standard and offer UV protection to maintain color integrity under harsh sunlight.
Coated in accordance with the AS 3566 standard, meeting Class 3 and Class 4 corrosion resistance requirements for reliable performance in coastal and industrial environments.

3. Hex Head Type 17 Roofing Screw

Application

Hex head Type 17 roofing screws are specifically designed for fixing metal roofing sheets to softwood or hardwood timber structures. Featuring a sharp Type 17 cutting point, these screws eliminate the need for pre-drilling, making installation faster and more efficient on timber substrates.

Features and Benifits

Type 17 Point: Self-drilling tip with cutting flutes enables quick penetration into timber without splitting, eliminating the need for pre-drilling.
Strong Hex Head Design: Provides high torque transfer and secure fastening during installation.
Painted Head Options: Available in various colors to match roofing panels and maintain a clean finish.
Pre-assembled EPDM Washer: Offers superior sealing against water ingress, ideal for roofing applications.
Corrosion Resistance: Available in Class 3 and Class 4 coatings as per AS 3566, suitable for coastal and industrial environments.

4. Double Thread Hex Head Roofing Screw

Application

Double thread hex head roofing screws are designed for securely fastening metal roofing sheets to timber or light steel structures. The dual-thread design improves pull-out performance and reduces the risk of sheet movement or “pumping” under wind load or thermal expansion.

Features and Benifits

Double Thread Design: Upper thread grips the metal sheet, while lower thread anchors into the base material—improving clamping force and preventing sheet movement.
Hex Head with EPDM Washer: Ensures watertight seal and high torque performance.
Self-Drilling Tip (Type 17 or No.3): Enables fast and efficient installation into timber or steel without pre-drilling.
Painted Head Options: Color-matched for a clean, professional roof finish.
AS 3566 Class 3 & Class 4 Coating: Corrosion-resistant coatings suitable for coastal and industrial environments.

5. Heavy duty self drilling screw

Application

Heavy duty self-drilling screws with an extended No.5 drill point are specially engineered for fastening into thick steel sections—up to 12mm in thickness—without the need for pre-drilling. Designed for high-strength structural applications, these screws are ideal for heavy steel frames, industrial building construction, and steel fabrication work.

Features and Benifits

No.5 Extended Drill Tip: Capable of drilling through up to 12mm thick steel in a single operation, reducing installation time and labor costs.
Heavy Duty Thread Design: Ensures strong grip and holding power in thick steel substrates.
High Torque Hex Head: Provides excellent torque transmission and is compatible with power drivers.
Optional EPDM Washer: For waterproofing when used in external applications.
Corrosion-Resistant Coatings: Available with Class 3 or Class 4 finishes per AS 3566 for use in tough environments.
One-Step Installation: Drills, taps, and fastens in one operation—no pre-drilling required.