Make sure you haven't got the discount earlier.
![Customer Service Representative](https://partselectcom-gtcdcddbene3cpes.z01.azurefd.net/images/csr-partdetail.jpg)
Guide Bar Nut 5/16-18 678339003
Fits your RY40505!
Fits your RY40505!
PartSelect Number PS9996008
Manufacturer Part Number 678339003
Manufactured by
Ryobi
![Customer Service Representative](https://partselectcom-gtcdcddbene3cpes.z01.azurefd.net/images/csr-partdetail.jpg)