I have 8 Ikea Billy bookcases and I would like to attach them together to make the seam betwen them as narrow as possible.
What sort of screw or fastener is appropriate for particle board?
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It only takes a minute to sign up.Sign up to join this community
I am not a big fan of screw threads in particle board.
They come in a wide variety of lengths and finishes. Pick the size and style that fit.
Images and links are illustrative only, not an endorsment of goods or sources.
I would talk to someone at Ikea about this. If you look on their site at Billy bookshelves, when they sell a wider version it is two bookshelves side by side and they do not share a single side piece. It appears to be two separate ones that they have tied together. So they must have a system for doing this and you can get the hardware from them.