Shaft Key and Keyway is an Android application developed by LetsFab that provides key and keyway size information for shafts. This app is particularly useful for fabrication engineers and operators who need to determine the correct key and keyway size for a shaft.

With this app, users can access both metric and English/British size key and keyway information, as well as measurements in both millimeters and inches. The app is free to use and falls under the Education & Reference category.

Overall, Shaft Key and Keyway is a handy tool for those in the fabrication industry who need quick and accurate key and keyway size information for their projects.