Washer

additional part of the bracket : https://www.thingiverse.com/thing:3866741 desined by https://www.thingiverse.com/copter1976

original part :
https://shop.zanussi.co.uk/fridges-freezers/fridges-freezers/door-parts/integrated-fridge-freezer-door-fixing-bracket/p/8996711636028

https://www.buyspares.co.uk/integrated-fridge-freezer-door-fixing-bracket/product.pl?pid=346312

https://shop.electrolux.co.uk/fridges-freezers/fridges-freezers/door-parts/integrated-fridge-freezer-door-fixing-bracket/p/8996711636028

compatible with many brands as AEG Electrolux

two brakets and 2 washers are needed to fix a finishing door panel to the integrated fridge