Replacement part question

Hello,
We have a lavatory partition door knob that is no longer working. The knob is loose and spins without moving the bolt.

I have watched a video on line about drilling off the door handle and snapping the new one back in place. Can you confirm the parts and part numbers I will need for the repair?

I have included a couple of photos of the handle in question.

Thank you,
Ken

Good morning Paul, yes the 10-557 looks correct. My concern is the inner latch portion that mates with it. What is the part number for the slide assembly? I want to purchase both parts, not knowing what is broken in side the door.