Haiyan Jiafeng Standard Parts Factory, established in 1992, is a Chinese company specializing in manufacturing and customizing stainless steel nuts. They offer a wide range of products including M5 stainless steel nuts, small size stainless steel nuts (≤M5), and various nonstandard nuts.

With professional machines and equipment, they ensure high-quality products such as DIN934, DIN985, DIN6923 (Flange Nuts), DIN439 (Thin Nuts), DIN917 (Hexagon Cap Nuts), K Nuts, and nonstandard nuts in sizes from M1.6 to M5.

The company is known for its competitive prices and encourages customers to contact them for more information or to place an order.