ST4 Stainless Steel Self-Drilling Screws A4-50 Grade 3mm-150mm with Food Grade 304/316 Options
High-quality ST4 stainless steel self-drilling screws available in sizes from 3mm to 150mm, manufactured to A4-50 grade standards. These precision fasteners feature pan head design with pointed tail for efficient self-drilling performance.
- Stainless Steel: SUS201, SS303, SS304, SS316, SS410, SS430
- Carbon Steel: C1008, C1018, C1022, 10B21
- Other Materials: Alloy Steel, Brass, Aluminum, Copper
- Custom materials available upon request
| Parameter | Specifications |
|---|---|
| Head Types | Countersunk, Flat, Phillips, Pan, Truss, Round, Oval, HEX, Cheese, Cap, Binding |
| Surface Treatments | Zinc, Plain, Polish, Black Oxide, Cadmium Plated, Zinc-aluminum Coated, Chrome Plated, Silver Plated, Anodized, or custom |
| Sizes | M0.8 to M14 |
| Length Range | 1mm to 200mm |
| Hardness Grades |
Carbon Steel: 4.8-12.9 grade Stainless Steel: A2-70, A4-70, A4-80, A5-80 Custom hardness available |
Material: Stainless steel 316/304 (food grade), waterproof, ideal for water purifiers, dispensers, and humidifiers
Factory Quality: Includes quality testing laboratory with performance reports available
Certification: SGS-certified environmental compliance from third-party testing
Standards: DIN/ISO/ANSI/GB compliance
| Quantity (pieces) | Lead Time (days) |
|---|---|
| 1 - 10,000 | 10 |
| 10,001 - 50,000 | 15 |
| 50,001 - 100,000 | 20 |
| > 100,000 | To be negotiated |
- MOQ: 1000 pieces
- Payment: T/T
- Samples: Free samples available for existing tooling
Consumer electronics and automotive fasteners, water purification systems, dispensers, humidifiers, and various industrial applications.
We accept OEM/ODM services with 20+ years experience in custom non-standard screws. We can create product drawings based on your requirements if needed.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.