Putting Objects into each other

Hi,

I would like to simulate screwing bolts into an object. To be more precise, I want the player to take the screws and when he/she puts the screws close to where they should be screwed in, they stick to the place in the correct way.

What's the best way to do this?

I am using the SteamVR Plugin an so far I haven't been able to find something similar in the ExampleScenes