Bolts, nuts and washers sorting jig

A simple jig to make sorting bolts, nuts and washers easier and faster. Bolts and nuts from M2,5 to M6 can be sorted. By washers the range is just from M3 to M6. The washer testing part requires one bolt from each size to be screwed in from the bottom, thus you have to tap the holes in the printed part and prepare the bolts (length doesn't matter. 10 - 15 mm works well). The holes for testing screw diameter have to be drilled to perfect sizes (2,5mm; 3mm; 4mm; 5mm; 6mm).
The screws for washer testing section have to be threaded all to way to the head.