My local farm supply place does, but then I'm in the US. They have rows upon rows of storage bins containing screws, nails, nuts, washers etc. and a supply of bags that the customer can use, along with scales for them to calculate weight. Write the product code and the weight on the bag, then take it to the front desk (where they sometimes re-weigh it and sometimes just take your word for it). Everything seems to be far cheaper than the big DIY sheds and of equal or better quality.
cheers
Jules