I think i might be the exception - I always have loads of nails. I seem to have to sell them of regularly. My paint and bricks accumulate at around the rate I need them.
Hammers? I never have any of those, maybe get two a day if I'm really filling trains. Slabs are rare. Windows, I almost never get. For a long time I hung on to all building stuff and had loads of community buildings on the go. Following advice from the forum, I've stopped doing that. My population is way below friends of similar levels. I'm level 48 and at this rate i'm still a few weeks off a Mexican restaurant factory, as I can't get community building s built.
I pretend this is due to ongoing industrial disputes with window manufactures as a reaction to previous abuses combined with train strikes as I upgraded lots of factories before realising I should have invested in rail. This at least keeps me entertained while I wait for hammers and windows - perhaps the hammers are smashing all the windows ?