Spektrum RC Collet Prop Adapter 5mm-5/16x24 Prop Shaft

The Spektrum Collet Prop Adapter (part number SPMXAMA4966) allows you to securely mount 5/16x24 threaded propellers to a 5mm smooth motor shaft using a reliable collet-style design. This adapter delivers exceptional concentricity and grip without marring your motor shaft—ideal for electric RC aircraft requiring precise, vibration-free performance.

Perfect for high-power setups where a solid and balanced connection between motor and prop is critical.

Key Features:

• Part Number: SPMXAMA4966

• Motor Shaft Compatibility: 5mm (smooth, no flat)

• Propeller Thread: 5/16x24 fine thread

• Type: Collet-style adapter – self-centering, no set screws needed

• Material: Lightweight, precision-machined aluminum

• Benefits:

  • Even grip around motor shaft

  • No shaft damage from set screws

  • Enhanced propeller balance and alignment

• Ideal For: Electric sport, aerobatic, and scale airplanes

• Includes:

  • Collet adapter body

  • Threaded prop shaft

  • Cone nut (may include washer/nut depending on packaging)