Cut this stock to length to create the machine key you need. Straight keys, with a square or rectangular cross section, are the most common type of key. Install in a keyway to transmit torque from shafts to gears and other components.

When installed, these keys fill oval keyways completely, reducing stress on the key and shaft. The rounded ends make it easy to slide gears, hubs, and other components into place. These are also known as feather keys.

These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. The gib head makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping.

Thread a screw through the tapped hole to pop these keys out of a keyway. When installed, they fill oval keyways completely, reducing stress on the key and shaft. The rounded ends make it easy to slide gears, hubs, and other components into place.

These assortments include various sizes of key stock—choose a piece and cut it to your desired length.

Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping.

Cut keys to custom lengths. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways.

Also known as offset key stock, use step keys to repair keyways in gears and shafts.