OS Prop Nut 10-12
This is the Prop Nut for OS engines with a 5mm crank thread.
Black in color
One 5mm Prop Nut
Inner Thread Size: 5mm (.197")
Outer Nut Size: 8mm (317"), use an 8mm nut driver if needed.
Thickness: 4mm (.130")
This Prop Nut fits the following OS engines:
10 FP Series
12 & 15 CV Series, including CV-R Series
12 & 15 LD Series