If you read my post I stated Fender Classic Player and Squier are both 5mm. I never said Fender AVRI. Found the Fender Repalcement.Do you know the country of origin of this tailpiece? If it’s made in the US those import arms won’t fit. You might have to get an AVRI arm.
https://www.fender.com/en-US/parts/tremolo-arms/player-jaguarjazzmaster-tremolo-arm/0082060049.html