The Great Planes Aluminum Safety Spinner Nut (1/4"-28) is a lightweight, high-quality upgrade for glow-powered RC airplanes. It securely holds your propeller in place while reducing weight and improving overall engine performance. Because it’s made from durable aluminum, it provides the strength needed for high-RPM engines without the extra weight of a steel nut.

The precision-machined 1/4"-28 thread fits many popular glow engines, making it a great replacement part for sport flyers, aerobatic airplanes, trainers, and scale models. The rounded “safety spinner” shape not only looks clean and aerodynamic, but it also helps protect the engine shaft and reduces the chance of injury when hand-starting the engine.

This spinner nut installs easily and stays tight even during vibration, high-speed flight, and repeated prop changes. It offers reliable propeller retention, smoother throttle response, and less strain on the crankshaft—helping your engine run more efficiently and last longer.

Whether you’re building a new aircraft or replacing old hardware, the Great Planes Aluminum Safety Spinner Nut is a dependable, long-lasting upgrade that combines safety, performance, and lightweight construction.

⚠️ Important Notes

No refunds or warranties. Product sold as-is, without packaging. All sales final.
Quantity discounts available—call (847) 526-2136 for details.