Metal Screw & Post 4/ - N-Scale (4)

I bought as et of these, hoping they would be big enough to hold the trucks on some HOn3 stuff I am scratch building. if I drill the hole in the trucks out large enough for these screws, there will be no bolster left. personally, I think these would work on HO, and probably O scale. I can't imagine what they might fit on anything in N scale. I don't want to give a bad rating on these, because I think they would be very good for holding trucks on. but they are just too big. I don't know, maybe they are mis labeled.