Surprisingly enough, Amazon has a wide selection of bolts/hardware at good prices and reasonable delivery times 2-4 days normally.
Finding the correct bolt size, thread pitch, material, and trusting that when I order grade 8 bolts, I’m actually getting grade 8 makes Amazon quite a pain in the ass.
If it’s something I don’t care too much about, yea Amazon is fine. But when I want to trust my life to it or it’s going to take some serious stress I’m going to want McMaster.
I don’t think you need to worry about sizes (or pitch) everything I have gotten from them has been correct but material and strength (temper) are definitely something to be wary of. So yea if you need ansi strength out of a bolt don’t get it from Amazon, but if you are just using a 1/4"-20 to fasten something together you’re probably fine.
