Who has ever dug in their boxes with all sorts of nuts or washers, he knows how sometimes it is difficult to find names-but the nut or washer that you need.
My advice will save you in this case, time and nerves. Hang on the workshop wall or garage Board with nails hammered obliquely, sort them and label the fasteners, which thread or diameter. Now just look at the Board to quickly find and rent much needed nut with the corresponding nail.