GBT 819 Stainless Steel Cross Recessed Countersunk Screws China Factory Suppliers
GBT 819 Stainless Steel Cross Recessed Countersunk Screws China Factory Suppliers
The GB/T 819 Stainless Steel Cross Recessed Countersunk Screws are engineered for precision and durability, specifically designed for applications requiring a flush finish. Manufactured from high-grade A2-70 stainless steel, these machine screws provide an optimal balance of mechanical strength and superior corrosion resistance, making them ideal for demanding industrial environments.
Featuring a professional cross-recess drive and a tapered head, these fasteners ensure a seamless integration with the material surface, eliminating protrusions and enhancing safety and aesthetics. Whether used in machinery assembly or structural fixings, these screws offer reliable fastening performance and long-term stability under various stress conditions.
Detailed Parameters
| Standard | GB/T 819 | Material Grade | A2-70 Stainless Steel |
|---|---|---|---|
| Drive Type | Cross Recessed (Phillips) | Head Style | Countersunk (Flat/Oval) |
| Size Range | M2 to M10 | Length Range | 4mm – 50mm |
| Finish | Natural Stainless Steel | Surface Fit | Flush Finish |
| Application | Machine Fastening | Corrosion Resistance | High (A2 Grade) |
Key Advantages
Corrosion Resistance
A2-70 stainless steel construction ensures maximum protection against rust and oxidation in humid environments.
Long-term Durability
High tensile strength properties reduce the risk of deformation and ensure a secure, permanent hold.
Flush Surface Finish
The countersunk design allows the screw head to sit perfectly level with the surface for a clean look.
Precision Fit
Strict adherence to GB/T 819 standards ensures perfect compatibility with matching tapped holes.
Sleek Aesthetics
Eliminates protrusion, reducing snagging hazards and improving the overall visual quality of the product.
Easy Installation
The cross-recessed drive allows for quick and efficient installation using standard power tools.
Product Gallery
Management Platforms
Inventory Control
Real-time tracking of all stainless steel screw sizes from M2 to M10 to prevent stockouts.
Quality Assurance
Rigorous inspection protocols to ensure every batch meets A2-70 material specifications.
Order Tracking
Transparent supply chain management from raw material sourcing to final delivery.
Compliance Monitoring
Continuous auditing of GB/T standards to ensure international export compliance.
Logistics Optimization
Strategic packaging and shipping methods to ensure zero damage during transit.
Customization Portal
Digital interface for specifying custom lengths and quantities based on project needs.
Investment Return Comparison
| Performance Metric | Standard Carbon Steel | A2-70 Stainless Steel | Benefit Ratio |
|---|---|---|---|
| Service Life | Short (Rust prone) | Ultra-Long | 5x Increase |
| Maintenance Cost | High (Frequent Replacement) | Negligible | -80% Cost |
| Installation Speed | Standard | Fast (Precise Fit) | +20% Efficiency |
| Corrosion Resistance | Low | Excellent | Superior |
| Total Cost of Ownership | High (Life-cycle) | Low (Long-term) | High ROI |
Frequently Asked Questions
A2-70 stainless steel provides exceptional corrosion resistance and a higher tensile strength, ensuring that fasteners in cutting tool machinery remain secure without rusting in oily or moist environments.
The countersunk design allows the screw head to be recessed into the material, creating a flush finish that prevents snagging and provides a professional, streamlined appearance.
Yes, these are manufactured according to the GB/T 819 standard, which aligns with many global metric specifications for cross-recessed countersunk screws.
They are widely used in metal product manufacturing, automotive assembly, electronics, and the production of precision cutting tools and machinery.
While our standard stock ranges from 4mm to 50mm, we offer customization services for bulk orders to meet specific project engineering requirements.
Always use a screwdriver bit that exactly matches the size of the cross recess and apply steady, downward pressure to ensure the bit remains seated firmly.
