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Alpha Cool rads / yate loon fans.. what screws?

post #1 of 6
Thread Starter 
The supplied M3x30 / M3x35 are too long for these fans. Does anyone know what kind I should purchase?
post #2 of 6
You need to say how thick the fans are. Typically you got fan thickness + 5mm if going through a rad itself (slightly shorter is also ok), and longer if you have things in between- shroud, radiator mount, case etc where you would then add up the extra distance and get the next longest screw. Typically these come in lengths of 5mm so you may have to cut them to length if it ends up being an uncommon number.
post #3 of 6
Thread Starter 
Quote:
Originally Posted by geggeg View Post

You need to say how thick the fans are. Typically you got fan thickness + 5mm if going through a rad itself (slightly shorter is also ok), and longer if you have things in between- shroud, radiator mount, case etc where you would then add up the extra distance and get the next longest screw. Typically these come in lengths of 5mm so you may have to cut them to length if it ends up being an uncommon number.

Oops- sorry about that.

I got a 360x30 and 240x45.

These are the lateyoons that I ordered.. http://www.ebay.com/itm/320866547101?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Fans are going directly onto the rad nothing in between.
post #4 of 6
Exactly a geggeg said.

You know that the screw size is M3, the x30 / x35 is the length in millimeters, so just measure up how thick your fans are plus thickness of whatever else the screw needs to pass through, allow a maximum of 5mm extra to go into the rad, and the resulting length is what you need.

If it's just to go through a case side with a fan in between the case and the radiator, then I'm guessing the fans you're using are "slim" fans, probably 15mm? If so then you want M3x20 screws.

Another option in this standard layout would be to use 5mm M3 screws (M3x5) to attach the fan to the rad, then use standard fan case screws (the thick but stumpy self tapping ones) to attach the fans to the case. But of course that is only an option if your fans have "open" corners, for closed corners you can only use screws that go all the way through to the rad.

Edit:
Quote:
Originally Posted by jsx821 View Post

Oops- sorry about that.

I got a 360x30 and 240x45.

These are the lateyoons that I ordered.. http://www.ebay.com/itm/320866547101?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Fans are going directly onto the rad nothing in between.

In that case you need M3x25 screws, but keep an eye on them as you're screwing them in and if the ends look like they might damage the rad fins / tubes then file them down a mm or 2.

You can also cut down the ones you have if you want, just put them in a vice or pliers and use a hacksaw, making sure not to damage the threads too much at the cut and after careful measurement for length.
Edited by DaUn3rD0g - 5/18/15 at 4:55pm
post #5 of 6
Well that eBay link says that the fans are 20mm thick so you would want to get M3x25mm screws. Perhaps this is a good opportunity to get them in the head type of your preference also (Phillips vs socket for example)
post #6 of 6
Quote:
Originally Posted by geggeg View Post

Well that eBay link says that the fans are 20mm thick so you would want to get M3x25mm screws. Perhaps this is a good opportunity to get them in the head type of your preference also (Phillips vs socket for example)

^ What he said correct length is 25mm
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