ISO 7046 Countersunk Phillips Head Machine Screws - 304 Stainless Steel Flat Head Bolts from China Suppliers & Factory
Manufacturing Process
Quality Control System
Flexible Customization Capability
Technical Service
Flush Embedded Design Balancing Safety and Aesthetics
The core advantage of the Phillips Countersunk Head Machine Screw lies in its 90° countersunk cone angle. Once installed, the screw head embeds completely into the workpiece surface, delivering an unobtrusive, perfectly flush connection. This not only streamlines the appearance of electronic enclosures, furniture panels, and machine guards but also fundamentally eliminates snagging hazards caused by protruding screw heads—enhancing overall safety in mechanical assembly and architectural hardware. Driven by a universal cross recess, it enables fast one-handed fastening, dramatically boosting assembly efficiency while maintaining a compact structure. It is the ideal choice for precision instruments and outdoor projects that demand both a refined aesthetic and secure, snag-free performance.
Superior Corrosion Resistance Engineered for Harsh Environments
We supply A2-70 (304 stainless steel) and A4-80 (316 stainless steel) grades, precisely manufactured to ISO 7046, DIN 965, and GB/T 819 standards. The 316 stainless steel countersunk screws excel in chloride-ion resistance, reliably passing 720+ hours of salt spray testing to endure humid conditions and outdoor installations far better than ordinary black-finished carbon steel. The 304 option is perfectly suited for standard indoor and mild outdoor use. For budget-sensitive applications, we also offer 4.8 and 8.8 grade carbon steel with electro-galvanizing or hot-dip galvanizing, providing dependable rust protection and ensuring a tailored solution for every anti-corrosion requirement and cost target.
Strong Full-Thread Locking with Complete Global Standard Coverage
Spanning a broad diameter range from M2 to M12 and lengths from 5mm to 120mm, the full-thread design ensures these Phillips Flat Head Machine Screws deliver continuous, stable clamping force to effectively resist vibration loosening. Strictly compliant with GB/T 819.1, ANSI B18.6.3, and other international standards, the extensive dimensional range seamlessly fits assembly lines for electronics, furniture, machinery, and outdoor engineering. Whether you need natural polished or passivated stainless steel flat head bolts, or cost-effective zinc-plated carbon steel countersunk screws, our factory-background support delivers one-stop custom non-standard orders and in-stock availability, guaranteeing quality and on-time delivery.
Application Scenarios
High-Quality Phillips Countersunk Machine Screws Display
Frequently Asked Questions
We offer a wide range of materials including A2-70 (304 stainless steel), A4-80 (316 stainless steel) for high corrosion resistance, and 4.8/8.8 grade carbon steel with various surface treatments like zinc plating or hot-dip galvanizing.
Yes, our screws are strictly manufactured according to international standards such as ISO 7046, DIN 965, GB/T 819, and ANSI B18.6.3 to ensure global compatibility and high performance.
The 90-degree angle allows the screw head to sit flush with or below the surface of the material. This creates a smooth finish, eliminates snagging hazards, and provides a cleaner aesthetic for precision assembly.
Absolutely. While we stock standard sizes from M2 to M12, we also provide flexible customization for head shapes, special materials, extra-long specifications, and personalized packaging.
We implement a rigorous quality control system including raw material source locking, furnace number batch traceability, and real-time salt spray monitoring. Every batch is backed by third-party certification if required.
Yes, we provide free sample making and testing services to ensure our screws meet your specific application requirements and mechanical standards before you commit to a large purchase.