Attach threaded accessories, such as mixer propellers and fan blades, to the end of these shafts.

A flat surface area allows set screws to dig into the shaft for securely mounting gears, sprockets, and bearings.

Clip retaining rings into the grooves to separate and position gears, sprockets, and bearings.

Grooves on the surface of these shafts transmit rotary power while allowing bearings to move freely along the length of the shaft.