Normal
No need. It depends on the thickness of fans and the panel - and of course which length of inserts you are able to find. I'd choose the screws so that they would go 4 to 6mm into the inserts, that's enough.Let's say you have a 20mm fan, got 18mm long inserts and want to fix the fan to a 1mm thick panel, I would choose a screw with >7mm length.
No need. It depends on the thickness of fans and the panel - and of course which length of inserts you are able to find. I'd choose the screws so that they would go 4 to 6mm into the inserts, that's enough.
Let's say you have a 20mm fan, got 18mm long inserts and want to fix the fan to a 1mm thick panel, I would choose a screw with >7mm length.
