For the attachment of Thermochill radiators (or shroud) with a 25mm fan, cover or fan guard in a housing cover. Since a flat head screws must have a cover, fan guard and washers are used, otherwise "sink" screws into the holes in the fans and thus project the screws too far into the radiator and destroy it. Also, make sure that the Gasket will not compress too much.
Are required for each fan 4 screws. For flat head screws, the dimension refers to the actual length of the thread. Countersunk screws at the entire length is specified cut sheet metal screws This is the thread in itself, and afterwards can also easily be bolted back inside and out.

Delivery:
4 x 3.5 x40mm sheet metal screws (Torx) self-tapping.

Please note:
Excessive tightening of the screws can damage the radiator. Make sure that the screws do not damage the fins of the radiator. Damage due to improper use are not covered by the warranty.