Outcast What screws for heat sink and fan?

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I got a fan for my outcast that already has a heat sink, and there’s no screws so how do I know/ what screws do I need to be able to mount this fan to my heat sink?
Are you serious?
How about just measuring what screw you need? Takes 30 seconds.

Also, unless you tell us the dimensions of the fan, especially the thickness, no one will be able to give you an answer anyway.

Edit to not come across as a total peepee:

Arrma uses M3x16mm screws for their 10mm fan, see https://www.arrma-rc.com/en/product/fan-set/ARA390300.html
Do you have another unit with fan, if so pull one ot then and see if it fits You want a small metal type screw, not a machine screw.
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