Little stuff like that can really be useful to figure out fab stuff. I wouldn't use for final assembly except the intended use, but it makes for a handy setup. Cheap, too. I've got cotter pin, E clips and some other cheap assortments. Even if you end up buying quality stuff for final, it's so nice to have a grab bag of different sizes all in one place. Another that is useful, along with O-rings and others. https://www.harborfreight.com/200-piece-assorted-spring-set-67562.html\ Other assortments. https://www.harborfreight.com/search?q=hardware assortment
The Jalopy Journal
