Shimano Flat Mount Bolts w/ SRAM AXS Calipers?

I actually went to my local hardware store and found some bolts that work with 4mm hex heads. I’m not sure why I thought these would be custom fasteners. Never discount your local hardware store, folks!! They’re basically all M5 (or “5mm”) bolts. Odds are a store near you has them in almost exactly the right length. No need to wait for your bike shop or an online retailer to order bolts that cost way more than what you can find high quality stainless replacements locally (about 85 cents per bolt).