These washers fit servos below:

HS-65HB

HS-85BB

HS-5925MG

HS-85MG

HS-5945MG

HS-225BB

HS-6635HB

HS-225MG

HS-6985HB

HS-5245MG

HS-5955TG

HS-311

HS-5995TG

HS-322HD

HS-5996TG

HS-325HB

HS-5997TG

HS-422

HS-5998TG

HS-425BB

HS-755HB

HS-475HB

HS-755MG

HS-525MG

HS-765HB

HS-545BB

HS-785HB

HS-635HB

HS-75BB

HS-625MG

HS-77BB

HS-645MG

HS-6965HB

HS-5475HB

HS-6975HB

HS-5625MG

HS-705MG

HS-5645MG

HSR-8498HB

HS-965MG

HS-125MG

HS-985MG

HS-5125MG

HS-925MG

HS-945MG

These washers fit servos below:

HS-81

HS-65MG

HS-81MG

HS-85MG

HS-85BB

These washers fit servos below:

HS-50

HS-55