Shimano 105 Disc Brake Pad Axles Replacement

Can you please recommend a hardened replacement for the Shimano Y8J710000 pad axle, which fits the 105 disc brakes?
Hopefully the image below will show up.

Link to PDF https://si.shimano.com/pdfs/ev/EV-BR-R7070-4328B.pdf
Part number 11.
I've stripped the screwdriver slot on mine, trying to undo it.
Thank you.
Hopefully the image below will show up.

Link to PDF https://si.shimano.com/pdfs/ev/EV-BR-R7070-4328B.pdf
Part number 11.
I've stripped the screwdriver slot on mine, trying to undo it.
Thank you.
0
Posts
https://www.wiggle.co.uk/shimano-br-m785-pad-axle-snap-ring/
A couple of mm longer than the 105 pin but makes no difference.
I stripped the screw as well, it's made of cheese. The above works perfectly & is far better than the screw supplied.