Discover the strength and reliability of our high-quality black zinc oxide hexagonal bolt screws, expertly manufactured from top-grade materials including Carbon Steel, Alloy Steel, and Stainless Steel. Our state-of-the-art factory employs advanced surface treatments to enhance durability, ensuring our fasteners meet rigorous international standards such as DIN, GB, and JIS.

With various grades available, from 4.8 to 12.9, we cater to diverse industrial needs. Enjoy competitive pricing starting from just $0.4 per piece with a minimum order of 100 pieces, and benefit from our capacity to supply up to 10,000 pieces each month. Rest assured, our products are backed by ISO certifications, guaranteeing you receive only the highest quality fasteners for your projects.