Originally Posted by
saphcosmike
bzp? do you mean Bright Zinc Plated?
I am willing to pay but I have heard not to replace certain bolts with Stainless as they are too brittle.....

To clarify, I wouldnt recommend stainless i am no expert but i would imagine they would probably fail. The 12.9 is a High tensile steel fastener to BS and yes Bright zinc plated.