Stainless Steel Torx Round Washer Head Tapping Screws for Plastic
Torx Round Washer Head Tapping Screws for Plastic are specialized fasteners designed for secure and clean fastening into plastic components. These screws feature a Torx drive for improved torque transfer and reduced cam-out, a round washer head for better load distribution, and self-tapping threads that eliminate the need for pre-drilled holes. Manufactured from premium stainless steel, they offer robust corrosion resistance, long-term reliability, and a sleek finish ideal for industrial and commercial applications requiring clean aesthetics and high performance.
These screws are highly suitable for industries such as electronics, consumer appliances, automotive interior assemblies, and medical device manufacturing—where fastening into plastic is common and precision is essential.

Product Specifications
| Attribute | Specification | 
|---|---|
| Product Name | Torx Round Washer Head Tapping Screws | 
| Drive Type | Torx (Star Drive) | 
| Head Type | Round Washer Head | 
| Thread Type | Self-Tapping, Suitable for Plastics | 
| Material | Stainless Steel | 
| Finish/Coating | Plain / Passivated | 
| Standards | DIN, JIS, ISO compliant upon request | 
Technical Parameters
| Parameter | Value | 
|---|---|
| Thread Diameter | 3.0 mm – 6.0 mm | 
| Thread Pitch | According to DIN/ISO standards | 
| Screw Length | 10 mm – 50 mm | 
| Drive Size | T6 – T25 (depending on diameter) | 
| Torsional Strength | ≥9 Nm (varies by size) | 
| Insertion Torque (Plastic) | Optimized for thermoplastics | 
| Hardness | ≥HV450 (depending on steel grade) | 
| Corrosion Resistance | ≥500 hours salt spray test | 
Material Details & Manufacturing Process
These screws are crafted from high-grade stainless steel, typically A2-70 or A4-80, known for excellent mechanical properties and corrosion resistance.
Manufacturing Workflow:
- Wire Cutting – Stainless steel wire is prepared per designated diameter.
 - Cold Heading – Screw head and washer formed via precision shaping.
 - Thread Rolling – Self-tapping threads are created using dies.
 - Torx Drive Formation – Torx recess is precisely punched.
 - Surface Processing – Polished or passivated for corrosion resistance.
 - Quality Inspection – 100% inspection using digital measurement systems.
 
This rigorous process ensures that each screw meets international standards and performs with consistent quality.
Typical Applications in Industries
Torx Round Washer Head Tapping Screws for Plastic are widely used in:
- Electric and electronic device enclosures
 - Home appliances assembly (including plastic housing and panels)
 - Medical device fastening
 - Automotive interior trims and dashboards
 - Consumer electronics such as remote controls, thermostats, and toys
 - Telecommunications hardware
 
Due to their corrosion-resistant nature and ideal load distribution properties, they are preferred in environments where plastic materials predominate and thermal expansion or vibration may occur.
Key Advantages and Competitive Edge
High-Quality Materials:
Using premium-grade stainless steel ensures excellent anti-rust performance and structural integrity.
Precision Engineering:
Manufactured under strict controls, these screws maintain consistent thread quality and tight tolerances that enhance fastening accuracy.
Advanced Surface Treatments:
Optional polished or passivated finishes deliver outstanding corrosion and wear resistance, suitable for long-term exposure environments.
Customization Flexibility:
Dimensions, Torx sizes, and thread patterns can be tailored to client specifications, supporting unique design needs.
Reliable Stock and Fast Delivery:
With comprehensive warehousing solutions, Flybear Fastener ensures prompt global delivery of standard and custom orders.
Robust After-Sales Service:
Comprehensive technical support, fast response time, and problem-solving utilities add immense value to our fastener products.
Company Testing and Quality Control
At Flybear Fastener, quality is non-negotiable. Every production batch undergoes:
- Dimensional inspection through thread gauges and calipers
 - Torsion and shear strength testing
 - Corrosion verification via salt spray tests
 - Torque and drive-fit testing per standard specs
 
Our quality assurance meets or exceeds ISO 9001 systems, delivering peace of mind to global customers.
How to Choose the Right Torx Screw for Plastic
When selecting screws for your plastic fastening application:
- Determine thread size by assessing plastic density and thickness.
 - Choose appropriate length to ensure grip depth without over-penetration.
 - Select Torx size for required torque transfer.
 - Evaluate surface finish based on environmental exposure.
 
Consult our engineers by visiting contact us with your project samples or drawings to receive tailored product recommendations and quotes.
Conclusion & Company Highlight
As a professional manufacturer and exporter, Flybear Fastener has been delivering high-performance fastening solutions for over a decade. Whether you need off-the-shelf components or customized parts, we offer tailored design, cost-effective production, and reliable delivery timelines.
We always adhere to the philosophy of “Quality First, Customer Paramount”, aiming to provide high-quality fastener products and one-stop fastening solutions for clients around the world.
Interested in similar products or have specific design queries? Feel free to contact us for industry-specific solutions and competitive pricing.








