The customer for this process is Automotive Axles Limited. The input material used is a turned blank, which undergoes a sequence of precision operations including spline rolling, threading, and grinding to achieve the desired dimensional and surface characteristics. These operations are performed using advanced machines such as the MTS Spline Roller, MKS Grinding Machine, and T Sugami Thread Roller, ensuring high accuracy, consistency, and superior surface finish in the final component. The critical parameters in this process are the grinding diameter, which must be maintained within a tolerance of ±0.010 mm, and the spline diameter, which must be controlled within a tolerance of +0.03 mm to ensure dimensional accuracy and proper functionality. Furthermore, in accordance with customer-specific requirements, thread protection is ensured by using a thread sleeve, safeguarding the threads from potential damage during handling and subsequent operations.