High-Quality Black Hardened Self-Tapping Screws for M2.3 M3 M4 M5

High-Quality Black Hardened Self-Tapping Screws for M2.3 M3 M4 M5. Comprehensive Customization: Full customization available from samples, designs, or drawings with flexible options. Wide Material Selection: Available in C1022, 1022A, Q195, Q235, 45#, 55#, and 22A steel grades. Diverse Thread Types: Offers metric, inch, UNF, and wood thread options to meet various standards. Extensive Size Range: Shank diameter from 1.2mm to 10mm and length from 19mm to 300mm. Multiple Surface Treatments: Options include Black/Gray Phosphated and Zinc Plated for enhanced protection. Global Standard Compliance: Products comply with DIN, ISO, ANSI, ASME, ASTM, IFI, and BSW standards. OEM/ODM Support: Professional manufacturer offering design, development, and production services. Quality Assurance: Pre-production samples and final inspections conducted before every shipment.