The DIN 5482 standard specifies the requirements for splines with a profiled shaft and a mating internal spline. Splines are used to transmit torque and rotational motion between two shafts.
A very specific request!
Wire Electrical Discharge Machining is often used for small batches or hardened parts using the CAD profiles derived from the standard. Broaching: Common for high-volume internal splines. ⚠️ Important Considerations for Engineers din 5482 spline standard pdf