help to fix - how to re-attach derailleur

[Lookrider]

Gear-mechhangar.co.uk

Rearmechhangar.com

[gregoryoftours]

Neil C is correct on the hanger pattern. You need to order the hanger bolt with it as well. The mounting bolt from that derailleur isn't sold separately to the derailleur to my knowledge, but you could try a few bike shops to see if they have it in their bits and bobs drawer, or you may find it second hand. If you have to buy a whole new derailleur because you can't get the bolt I'd get a better replacement as Shimano tourney is not great quality.

[Nadie0212]

UPDATE

Found the right hanger, and got the bolt from a broken derailleur. The bike is back and running.

Thanks a lot. I couldn't have done with your advise.

[gregoryoftours]

Ideal result