Complementary range to the vintage steam props. These have the narrow-chord blades typical of early 20th C styles, but finer pitches than the steam props which allows them to be used with electric motors. This section includes forms such as the Pre-Dreadnought propellers, and the Liberty ship design.
The typical thread types for these props are M2 (for very small props), M3, M4 and M5. You can specify another thread type if you know exactly what you need.
Reference numbers for this range give the diameter in inches followed by the pitch in inches. Eg. 1920 is 1.9" dia. x 2" pitch.