What type of screws do you suggest I buy for fixing a coat rack to a hollow door, 34mm thick? It's just made from cheap hardboard, I think. I bought these https://www.amazon.co.uk/gp/product/B009HN8J3G/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1, but think I was sent the wrong product (or at least I'm misunderstanding something, as the length of the bodies of the screw is about 40mm, so they're completely useless for my purpose).
Thanks.
Thanks.