McMaster is pretty good as a consumer for fastener hardware, a good assortment of various geometries of various metals, and mixing supplies in sense of both ava

McMaster is pretty good as a consumer for fastener hardware, a good assortment of various geometries of various metals, and mixing supplies in sense of both availability, exotics (such as aluminum flake 12.9 screws), and absolute zero bullshit with regards to knowing what you're actually getting, the fact it's always there, and that it's same day-next morning delivery in most parts of the US. I've had my fair share of actual 12.9 steel screws from Amazon that are actually 12.9 steel, and my fair share of 12.9 steel screws that were actually made of cheese. Plus... this is something maybe only a CAD user can understand - McMaster Carr provides an outright sex bible of importable 3D CAD objects. Like, I really thought my CAD instructor in University was joking when they said McMaster would be your Bible if you're ever designing in CAD for hobby/industry. Then I got a job, and holy shit were they right. So I like to think whenever I pay slightly more on McMaster for what I could get on Amazon or eBay, I'm supporting the bible for all of the goodness it's given me for my hobby designing and in making actual work less stressful as well.