Facelift FL1 caliper bolt sizes?

Hi folks just changed my pads and discs which was a nightmare job as all the 14 yo bolts were rusty and some rounded. I've managed to get them out but would like to replace them with stainless versions.

I already know that the grade I want to use has a high enough tensile rating but could do with the sizes as I've had to put them back on due to work commitments and forgot to measure .

Thanks!

Stainless must never be used in the brakes or suspension for that matter.

Just use new correct bolts, as they normally last the life of the calipers.

Took your advice and ordered some OEM ones