I think what you want to know is if a fuel pressure return bolt from a OM617/ 616 will fit your 190D. The OM617 takes a 12 mm (i.d.) washer and a 17 mm wrench. If the 190D is the same, then it should fit. I don't think the thread pitch on the bolt would be different.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked