This is the Double Jam Nut Adapter Kit from Tru-Turn.|
Tapped 10-32 for cone screw.
Used to mount Tru-Turn aluminum spinners onto the following engines:
OS Max 40, 48 and 52 Surpass 4-stroke engines.
One Adapter Nut
One Adapter Jam Nut
One Propeller Washer
One Aluminum Bushing
1/2" End Wrench To Tighten
Tru Turn Aluminum Spinner
Crankshaft Thread Size: 1/4"-28
Spinner Mounting Bolt Thread Size: 10-32
Bushing Size: Inner: 1/4" Outer: 3/8"