You probably already figured this out, but the 5 S-1 uses the same nozzles as the Creality 7, they share the same hot end… Creality don’t make a hard nozzle for them, you have to purchase in the aftermarket, and even there they are hard to find…
The only ones I have found so far, other than the Micro Swiss plated ones in that thread are from China…
Mine have arrived, but I have not tried them yet… They do look identical to the original Creality ones…
Bob