Just a word about the big stores. They may have the best prices, but, when I'm looking for parts,I always go to the "little mom & pops stores" first. You might pay a little more,but you won't have to buy a whole package of bolts or screws. We had a 3 or4 of the "little guy" stores here in town & Lowes & Menards & Wallyworld came in & eventually shut them all down but one. The last one has a complete stock of metric, standard, bolts, nuts, screws,etc. Hopefully he'll be around for awhile.