Comment by noasaservice

I'd also highly recommend Misumi for extrusions.

I had a question about a bracket and its datasheet. The secretary put me on hold for 45s, and someone with a Japanese accent answered and said he was the lead engineer of that line(?!?!)

Like within 1m total, I had the authoritative answer down to the .002 deg, and the head engineer answering me.

So, I buy Misumi.

I also find McMaster is also in that top list of "Just buy from them and not worry!"