If you want cheap nuts and bolts, coach bolts, wing nuts, washers etc, then go to your pick and mix at your local Wilkinsons.
You get a small or large bag, and what ever you can get in, and seal the top, you pay a fixed price.
Hint.. put the large items in first, tuck smaller items around them , add more, them finally fill with smaller nuts and bolts, and shake well. Pig to sort when you get home:lol
Caution.. these are not high tensile nuts and bolts, and any zinc plating lasts just about until you get them home. but you do get what you want, rather than go to screwfix, where you need to buy a hundred or so of each.
Another money saving tip brought to you by Rustic...lol:lol