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Four silver aluminium propeller adapters 26 by 12 mm 3mm hole 5mm output axle

Unique-Bargains

Unique-Bargains RC Airplane Spinner Adapter 3mm Aperture 5mm Output Axle 4PCS

SKU CH-2XS9-YGP07

Four aluminium-alloy spinner adapters convert a 3.0 mm motor shaft to a 5 mm propeller axle for brushless RC aircraft

  • Product typeSpinners & Domed Nuts
  • Fits 3.0 mm motor shafts with 5 mm output axle
  • Aluminium alloy construction keeps weight to 14 g
  • Compact 26 mm length suits tight cowls
  • Silver tone finish resists corrosion in outdoor use
  • Four adapters included for multi-prop setups

4-Pack Propeller Adapters for RC Planes

These aluminium alloy adapters convert a 3.0 mm motor shaft to a 5 mm output axle. The pack contains four silver-tone pieces measuring 26 mm by 12 mm and weighing 14 g each. They are designed for brushless motor and speed-controller setups on RC airplanes.

Suits Builders Converting 3 mm Shafts to 5 mm Props

Pilots who already use 3 mm brushless motors and want to run standard 5 mm propellers will find these adapters a direct fit. They are not for models that require a different input bore, a larger output diameter or a collet-style clamping system.

Simple Press-On Installation

Each adapter slides onto the motor shaft and secures the propeller with the existing prop nut or screw. The tight tolerance demands a clean, undamaged 3 mm shaft; burrs or oversized shafts can prevent full seating and cause vibration.

How it compares

Measured against everything we stock in Toy Spare Parts & Connectors, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 70% of the 69 comparable items (median $10.99).

Specifications

Product
Brand nameUnique Bargains
Model nameRC Airplane
Product typeSpinners & Domed Nuts

Questions about this item

Will the 3 mm aperture fit my brushless motor shaft directly?

Yes — the adapter's motor-axle hole is 3.0 mm, so it slides onto a 3 mm motor shaft without additional bushings.

Can I keep my existing propellers that have a 5 mm centre hole?

The adapter provides a 5 mm output axle, matching propellers drilled for a 5 mm shaft.

How can I confirm the adapters are seated correctly after installation?

Each piece measures 26 mm long by 12 mm diameter and weighs 14 g; a snug fit with no wobble on the 3 mm motor shaft and a centred 5 mm axle shows proper seating.

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