Will it matter

[BATTS91]

Now it probably doesnt but , the other week i ha a bolt come out and disapear from the prop donut , i replaced it with a random nut n bolt n washer ?

I say this as since them im experiencing vibrations an i only replaced the donut 6 month ago but tbh i rekon its fooked due to having to drive 25 mile home at 40mph with one bolt missing

[Brianmoooore]

Nut and bolt need to match the others for weight, and the bolt should be a very high tensile 10.9 grade.
You may have damaged the doughnut, or possibly the centring spigot/bearing that keeps the prop in line with the gearbox output shaft.

[BATTS91]

Ok thanks brian , the weight of bolts never crossed my mind . Spose ill have to go see bbb for one, and go from there