Eight times straighter than standard rotary shafts, these tight-tolerance shafts minimize vibrations and reduce wear to bearings and other components. They also have diameter tolerances that are twice as tight as standard rotary shafts.

These shafts have keyways only on the ends, leaving a plain shaft in the center. Use the keyways with machine keys to transmit torque to gears, sprockets, and other keyed components. Use the middle of the shaft with bearings and other round-bore components.

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.

A shoulder near the end of the shaft provides a stop for gears, sprockets, and bearings.