Transparency material issue

Vargo

Hello. I finished texture for my simple 3D game-ready model and when I tried to apply it in Unreal engine I got an issue with the material. After I set everything in material editor model looks weird:

I probably made mistake in setting material, but I don't know where

In this screen I put render from Substance how it should looks:

If anyone knows where the problem is, I would ask for advice. Thanks for your interest