Best way to secure cleat hook into brick

[bettz1]

Hi my cleat hook has worked its way loose last time I used 5mm plugs and 50mm screws, how should I go about getting it back into the brick and for it to not come out again?l

Bigger holes bigger plugs and screws?

 

[Swwils]

Chemical anchor.

 

[foxhole]

6mm plug and 70mm screws.

 

[bettz1]

Drilled bigger holes and so far so good thanks