Size 11 hybrid external linear actuator has a rotating stainless steel acme lead screw that is incorporated into the motor's rotor. Shaft to lead screw couplings are not needed with this design, thus saving time, money, and labor during assembly into the final application. The external linear actuator replaces four different componentsa motor, coupling, lead screw, and nut. The nut on the external linear actuator uses the same high performance engineering thermoplastics as the rotor drive nut of non-captive and captive designs. Haydon Switch & Instrument, Inc.