1
general::
Phrase(s): snap something into something [and] snap something in
to put or press something into something with an audible snap. • Next, you snap this little part into this slot here. • Snap in these legs then tighten the screws., Phrase(s): snap into something
[for something] to be put or fit into an opening with an audible snap. • The larger edge of the card snaps into the slot at the base. • This part snaps right into the other part.
McGrawhill's American Idioms And Phrasal Verbs