Bonour,

I have the 5KSM175 model... and I haven't had any problems. In the worst case, you can return the order.
Not tested with your model. Sorry

Have now ordered the set of 3. It is made of stainless steel and fits perfectly on my KitchenAid. ☺️

Yes, these accessories are compatible, and frankly they're better quality than the original ones.

Should be, but I'm not sure...