Looking for universal metric scew sets

[Krawlin]

I just did a random comparison between McMaster and Bolt Depot, McMaster wants $5.34 for a pack of 100 M3 x 20mm socket cap head screws, BoltDepot wants $6.63, and for all various lengths, McMaster is cheaper than BoltDepot.

Also, the hardware I have ordered from McMaster is Camcar brand, and is made in the USA. For larger bolts (1:1 applications), all of the stuff I have gotten from them has LE stamped on the head of the bolts, and I know that LE brand is also made in the USA. I'll stick to buying from McMaster because they are cheaper and sell hardware that is made in the USA.