
Class 4/8/10/12 Galvanzied Carbon Steel DIN934 Hex Nuts M3-M48 High-Strength Black HDG Zinc/Nickel/Copper Plated Nuts M3-M64. OEM/ODM Customization: Professional manufacturer accepting OEM and ODM services with competitive pricing. Strict Quality Control: Professional QC team inspects every item from production links to packaging. Free Sample Service: Free samples provided for standard fasteners to test and check quality. Fast Delivery: Standard lead time 30-35 days after deposit; dedicated shipping department ensures protection. Wide Material Range: Available in Carbon Steel with grades 4.8, 6.8, 8.8, 10.9, and 12.9. Multiple Surface Treatments: Options include Zinc plating, Black Oxide, Galvanized, Nickel plated, and more. Comprehensive Certifications: ISO9001, ISO45001, ISO14001 certified with advanced in-house testing lab. Global Export Experience: 20+ years experience exporting to North America, Europe, Asia, and Africa.