Repair clip for Savic Sputnik XL

The original plastic tabs of the Savic Sputnik XL small animal homes kept deforming and not securely holding the house to the top of the cage bars.
I made a clip that snugly fits in the slot of the tabs and allows a M6 bolt to be put through it. Therefore - now it is possible to securely attach the Sputnik to the top of the cage and not worry about it coming loose.

Before attachment - it is necessary to cut off the existing plastic tabs off.

Hardware needed:

3x Hex head M6 bolt - at least M6x16 - acc. to DIN 933 or  ISO 4017.  Can't comment on imperial sizes, but the clip allows a max of 10mm hex head size.
3x Wing nut M6 - DIN 315 or ISO 5448
3x or 6x Wide washers M6 - I like DIN 9021/1 because they have a large outer diameter.

Printing orientation and supports - only the bottoms of the clips need to be supported.