Yes, M4 bolts fit in place of chain rivets. Get 10.9 or 12.9 grade button heads:
Thanks. I just hammered the pin back in for now and used the sleeve part from a chaintool to flatten the link back down around the pin.
@hippy started
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Yes, M4 bolts fit in place of chain rivets. Get 10.9 or 12.9 grade button heads: