Bambu screws

Bambu Lab X1 Series
1

With purchase of X1C, you get neatly packed AMS unit that is screwed in the printer and also bed is screwed in to prevent movement during shipping.

Bambu uses these screws:

IMG_1432
IMG_14321920×2560 694 KB

These are not M threaded screws. What are these called?

I would like to buy bunch of them, different sizes. Why? These are great for screwing in printed material (so far tried PETG), way better than M threaded.

Thanks

2

The thread looks similar to this:

3

Thanks! Screws for plastic. Makes sense.