The customer for this process is Automotive Axles Limited. The input material used is a turned blank, which undergoes a sequence of precision machining operations including hobbing, thread rolling, grinding, and keyway milling to achieve the required spline, thread, and keyway profiles. The operations are performed using advanced and high-precision machines such as the BBC Colman Hobbing machine, T Sugami Thread Rolling machine, and MHG Grinding machine, ensuring superior dimensional accuracy and consistency in the final components. The critical parameters for this process include the grinding diameter, maintained within a tight tolerance of ±0.010 mm, and the spline diameter, controlled within a tolerance of +0.03 mm to ensure functional precision and product reliability. In line with customer-specific requirements, all critical parameters are subjected to CMM inspection to verify dimensional accuracy and maintain quality compliance.