I've been assembling a propane barbeque grill that came in a box. It came with an exact variety and number of screws to be used in assembly. But it's actually missing one screw.
I found an old screw in my box of miscellaneous metal leftover things. It's the right size and shape.
But I'm concerned about using an unintended screw because it might be a different material. Could it possibly be unsafe or unreliable around smoke, heat, propane, ash etc.?
Could it have collected or developed unsafe material/compounds after many years of sitting around?