jsc wrote:boltdepot.com is very handy when you need a few (or many) very particular screws for a project. Their minimum order size is one screw, although it will cost $5 for shipping so best to get more. I've been doing a lot of metric screw shopping lately for an eggbot. I think my strategy will be to get a box each of M3, M4, and M5 nuts and washers, then buy the screws in the lengths I need them as I need them.

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Can't thank you enough for that link

no more six trips a week to the hardware store and paying an average of 30 cents a screw for me.
I went a little crazy and bought pretty much a 100 of every thing in Socket Head, Button Head, and Flat Head size 1/4" thru 1" in 4-40, 6-32, and 8-32.
I'm pretty sure I'm set for a life time (and then some) now.
-Steve