YS Engine YSS1015 Propeller Nut - RC Prop Fastening Replacement  [YSS1015]

What this prop nut does

This YS Engine propeller nut is a compact replacement part for model prop installations. It clamps the propeller onto the engine shaft or spinner assembly and is designed to hold without affecting drive or tuning parameters.

Fitting is basic: clear any locking elements, slide the propeller into place, hand-run the nut down the threads, then apply a finishing turn with the correct tool. Avoid excessive torque and confirm the propeller runs true before flight.

Maintenance is limited to routine checks for thread integrity, wear, or loosening; re-torque after the first run with a new nut. It is intended as a handy spare for bench work and field repairs.