304 Stainless Steel Self-Tapping Screws - Phillips Countersunk Head, China Suppliers, Factory Direct, Class 12.9, M4.2-M6.3

Manufacturing Process
- ✓Multi Station Cold Heading Technology
- ✓Intelligent Heat Treatment System
- ✓Micron-Level Thread Rolling Process
- ✓Fully Automatic Optical Sorting
- ✓Environmentally Friendly Surface Treatment Line
- ✓Metallographic And Mechanical Joint Laboratory
Quality Control System
- ✓Raw Material Source Locking
- ✓Furnace Number Batch Full Traceability
- ✓Third Party Material Certification
- ✓Process Parameters Open And Transparent
- ✓Salt Spray Test Real Time Monitoring
- ✓International Standard Compliance Declaration
Flexible Customization Capability
- ✓Customizable head/slot Shapes
- ✓Extreme Application Of Special Materials
- ✓Breakthroughs In Extra Large/Long Specifications
- ✓Integrated Assembly Of Components
- ✓Customizable Surface Treatment Colors
- ✓Personalized Packaging And Labeling
Technical Service
- ✓On-Site Failure Analysis
- ✓Selection Calculation And BOM Optimization
- ✓Installation Tool Selection Guidance
- ✓Inventory Management (VMI) Trusteeship
- ✓Free Sample Making And Testing
- ✓International Standard Translation And Interpretation
Efficient Operation, Prevents Slippage
We use a standard Phillips recess design with precisely controlled depth and angle, compatible with mainstream power tools to enhance installation efficiency. The recess is smooth and burr-free, ensuring tight engagement with the driver bit, effectively preventing slipping or stripping. Whether for manual or automated assembly, it enables quick fastening, improves work smoothness and safety, and is especially suitable for high-frequency usage scenarios.
Precise Structure, More Reliable Fastening
The screw threads are fully formed with clear profiles and smooth surfaces, ensuring uniform engagement depth with nuts or base materials. The thread run-out is naturally finished to avoid jamming or seizing, improving installation smoothness. The optimized thread structure enhances tensile and torsional strength, maintaining stable fastening effect during long-term use and reducing the risk of loosening.
All-in-One, Stronger Connections
The self-drilling tip features a sharp point design, allowing direct drilling, tapping, and fastening on materials such as metal or wood without pre-drilling, significantly improving construction efficiency. The drilling process is stable with smooth chip removal, minimizing material damage. After fastening, it offers excellent pull-out resistance and vibration resistance, ensuring connections are not easily loosened, ideal for vibration environments or high-strength applications.
Factory Environment





High-Quality Stainless Steel Self-Tapping Screw Display
Frequently Asked Questions
Our screws are primarily manufactured from high-grade 304 stainless steel, ensuring excellent corrosion resistance and durability for both indoor and outdoor applications.
Our self-drilling tip design allows for direct drilling and tapping into materials like wood or thin metal, significantly reducing installation time by eliminating the need for a pilot hole.
Yes, we offer flexible customization capabilities. We can customize head shapes, slot types, surface treatment colors, and even special dimensions to meet your specific project requirements.
We implement a strict quality control system including raw material source locking, furnace number batch traceability, and fully automatic optical sorting to ensure every screw meets international standards.
Absolutely. We offer free sample making and testing services to ensure our products meet your application needs before you commit to a full purchase.
Yes, our screws feature a high-precision Phillips recess and smooth burr-free finish, making them ideal for both manual power tools and fully automated high-speed assembly systems.
















