These steppers have a threaded shaft, which allows them to be used as a linear actuator.
As the motor runs, it moves along the shaft at a specific rate of 1cm per 5 full rotations.
These are a good choice for linear motion where precision and repeatability are important.

Note: It looks like the datasheet for this stepper may not be accurate. When connecting this motor to a bi-polar driver you'll want to wire it according to the wiring diagram in the documents below.

Features:

• Step Distance: 0.01mm
• 2-Phase
• Rated Voltage: 12V
• Rated Current: 0.4A/Phase
• 100mm Long Threaded Shaft (keyed on one end)
• Holding Torque: 21 N.cm
• 6-Pin Wiring Harness Included

Documents:

• Datasheet
• Wiring Diagram