I worked in the semiconductor industry for 40 years. Most of it for an equipment manufacturer. With every new machine (these were very complex 20,000 lb pieces of equipment that cost north of a million dollars in the 80s) they sent boxes of grade 8 socket head screws and bolts as well as nuts and washers. A lot of it was never used and no one wanted it. My coworkers and I ended up with lots of nice hardware. And I have boxes of sheet metal screws, wood screws and etc........ I do have to go to the hardware store for hardware store once in a while, but not often.
Mike