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1/4-28 Thread. Tip thread is 8-32, useful for holding on spinner cones. Item is 1 unit, all sizes shown in photo for clairity. SKU Number: RRCFANH1428
RC Spinner Nuts
A spinner nut secures the propeller and spinner assembly to the engine shaft, and this category collects spinner nuts in the thread sizes common on model engines. Using the correct thread and size keeps the propeller seated firmly and running true.
Metric Thread Sizes
The Du-Bro spinner nuts are offered in 8mm by 1, 8mm by 1.25, and 6mm by 1 threads, covering several of the shaft sizes found on glow and gas engines. Matching the nut thread to the shaft is essential for a safe, secure fit.
Imperial Options
For engines using a 1/4-28 shaft, the aluminum hex engine shaft nut and the Fox MFG 1/4-28 spinner nut provide a matching fastener. Aluminum keeps the nut light while still holding the propeller securely. Confirming the thread pitch as well as the diameter avoids cross-threading a nut onto the shaft.
Check the spinner nuts below to find the thread that fits your engine shaft.
 "1/4-28 Engine Shaft Nut Aluminum Hex WHILE SUPPLIES LAST!")