You're at the junkyard pulling some parts, and you toss all the fasteners into your toolbox. Next time you clean out the ol' , you'll move all those nuts and bolts and washers to… where?
There's the "dump 'em in a big bucket, let God sort 'em out" method, which saves time up front but means you'll spend hours digging through 100 pounds of greasy junk every time you need a certain bolt. Then there's the "sort 'em obsessively by size/type and put them in eensy, well-labeled drawers for later use" method, which takes for-freakin'-ever but pays dividends when you're working on your Hell Project at 2:00 AM and all the hardware stores are closed.
My method is half-assed organized; I have drawers for broad categories of fasteners (Long Bolts, Lock Washers, Machine Screws, etc.) and mix all the metric and SAE stuff higgledy-piggledy. A few Whitworth bolts have found their way into the mix, just to add to the fun. Hose clamps, weird pressure fittings, gauge senders, and other oddball crap gets quasi-sorted as well. The upshot: after a quarter-century of junkyard scrounging, I've got a big enough collection of hardware to find what I need… if I'm really motivated. How about you?