OS Motors Locknut Set Spinner FS-52

This is the Prop Lock Nut Set for the OS Max FS-52S Surpass engine.

FEATURES:
Prevents the propeller from flying off even if the propeller
    must slip or loosen.
Durable steel construction.

INCLUDES:
One metal propeller washer
One metal hex lock nut
One metal hex expansion bolt

NEEDS:
A FS-52S engine on which to set up it.

SPECS:
Hex nut thread size: M5.5x1.0
Hex nut external size: 12mm (0.48")
Hex nut height: 8.4mm (0.33")
Prop washer external size: 22.9mm (0.9")
Prop washer inner size: 9.2mm (0.36")
Prop washer density: 2.8mm (0.11")
Hex nut expansion bolt external size: 9.8mm (0.39")
Hex nut expansion bolt thread size: M5.5x1.0
Hex nut expansion bolt thread size (spinner end): M4x0.7
Hex nut expansion bolt general length: 19.9mm (0.79")