DIN 6921 refers to a standard specification for hexagon flange bolts with a reduced shank (also known as CBH Fasteners). These bolts are commonly used in industrial applications where a secure and durable fastening solution is required. The reduced shank design allows for a smooth juncture between the bolt head and the flange, providing increased strength and stability. CBH Fasteners are known for their high-quality materials and precision engineering, ensuring that they meet the strict standards set by DIN 6921. When choosing fasteners for your project, opting for DIN 6921-compliant CBH Fasteners can provide peace of mind that your connections are secure and reliable.