
DIN 6923 M3-M16 Aluminum Black Oxide Weld Hexagon Car Nut Bolt. Customizable Specifications: Supports OEM/ODM with customizable name, finish, and certificates like ISO9001. High Temperature Resistance: Maintains high strength and creep resistance at high temperatures, extending equipment life. Excellent Weldability: Material is not prone to cracking after welding, suitable for resistance and argon arc welding. Precision CNC Processing: CNC machine tools ensure consistency of thread accuracy and hexagonal head dimensions. Strict Quality Control: Professional QC team inspects every item from production links to packaging. Comprehensive Testing Lab: Equipped with advanced equipment for chemical, mechanical, and corrosion resistance tests. Fast Delivery Service: Dedicated shipping department and forwarders ensure faster delivery and product protection. Wide Material Options: Available in various steel grades (4.6 to 12.9) and finishes like Zinc, Black Oxide, and Galvanized.