Finally a radiator fastener kit has arrived for mounting components to a radiator in options of M3, M4 and 6-32 to cover all radiators on the market. These fastener kits are configured for mounting Singularity Computers Products to radiators including our Pump Reservoir Combos, Reservoir Mounts, Back Plates and Mounting Rails. There is a shorter set for direct mounting and a longer set in case you want to mount to the radiator with fans in between.