Linear stepper motor which named Nema 17 external linear actuator, the motor part is 34mm 1.8 degree 1.33A Nema 17 stepper motor. It was integrated with 152mm Tr63317 threaded rod and a POM screw nut move along the threaded rod.
 
Electrical Specification : 
Manufacturer Part Number: 17HS1070-152N63317
Motor Type: External Linear Stepper
Step Angle: 1.8 deg
Holding Torque: 28Ncm
Rated Current/phase: 1.2A
Phase Resistance: 30ohms
Voltage: 2.8V
Inductance: 37mH ± 20%(1KHz)

Physical Specification :
Frame Size: 42x 42mm
Body Length: 34mm
Lead Screw Length: 152m
Lead Screw Diameter: 6.35mm
Lead /Step: 0.015875mm
Pitch: 1.5875mm
Lead/Revolution: 3.175mm 
Number of Leads: 2
Lead Length: 152mm
Weight : 0.25g