The customer for this process is Automotive Axles Limited. The input material used is a turned blank, which undergoes a series of precision machining operations including hobbing, thread rolling, and grinding to achieve the desired spline and thread profiles. These operations are performed using advanced machines such as the Pfauter New Hobbing machine, T Sugami Thread Rolling machine, and MHG Grinding machine, ensuring high dimensional accuracy and superior surface finish. The critical parameters in this process are the grinding diameter, which must be maintained within a tight tolerance of ±0.010 mm, and the spline diameter, controlled within a tolerance of +0.03 mm, to meet the stringent quality and functional requirements. Additionally, as per customer-specific requirements, thread protection is ensured by using a thread sleeve, which safeguards the threads from potential damage during handling and subsequent operations.