This is the 5/16-24 Jam Nut (Short) & 8mm Bushing Adapter Kit from Tru-Turn.|
Tapped 10-32 for cone screw.
Used to mount Tru-Turn aluminum spinners onto the following engines:
OS Max .70-1.20 Surpass 4-Stroke Abitar 1.20 4-Stroke
OS Max .91FX and 1.40 RX OS FS-91
One Short Adapter Jam Nut
One Aluminum Bushing
1/2" End Wrench To Tighten
Tru Turn Aluminum Spinner
Crankshaft Thread Size: 5/16" - 24
Spinner Mounting Bolt Thread Size: 10-32
Bushing Size: Inner: 8mm Outer: 3/8"