The S19 series upgrade heatsink nut is used to fix S19, S19PRO, S19A, S19+, and other upgrade heat sinks. It is one of the important accessories for S19 series upgrade heat sinks. The nut is made of pure copper material, which has good thermal conductivity and can quickly transfer heat to the surface of the heat sink for heat dissipation, improving the heat dissipation effect of the miner. The nut thread is deep, the force is uniform, and it is not easy to slip during rotation.