Pad Eye Chainplates

[Brion Toss]

Hello,
You might be able to get replacement pieces from the manufacturer, if they are still in business. But we usually have local fabricators make some up to our specifications. Usually just as cheap, and often better in terms of materials and angles and bearing surfaces.
As for inspection, dye penetrants are a very messy way to go; I recommend a microscope.
Fair leads,
Brion Toss