DIN 127, a standard established by the Deutsches Institut für Normung, is critical in the realm of fasteners, especially in the realm of capital bolts and hardware. This standard specifies the requirements for split lock washers, essential components in fastening applications for ensuring a secure connection and preventing loosening of bolts under vibration or dynamic loads. Capital bolts and hardware manufacturers often rely on DIN 127 to ensure that their products meet stringent quality and performance benchmarks. Complying with this standard not only enhances the reliability and safety of