What is the meaning of step 1, 1204, 1605,1610?
What you're talking about is not the type of the step motor, but the type of the screw. For example, 16 is the diameter of the screw in 1605, 16mm. 05 is the lead, which is the distance of the screw to move the weight around 5mm. This means that the 16mm diameter screw will drive the load along the 5mm
16 in 1605 is the diameter of the screw, 16mm. 05 is the lead, which is the distance of the screw to move the weight around 5mm. 1605 that is to say, the 16mm diameter of the screw will drive the load along the 5mm. 1204 means that the screw with a diameter of 12mm will move a circle and will drive the load up to 4mm.
What you're talking about is not the type of the step motor, but the type of the screw. For example in 1605: 16 is the diameter of the screw is 16mm. 05 is the lead, which is the distance from the screw to move the load to the 5mm. 1605 that is to say, the 16mm diameter of the screw will drive the load along the 5mm. 1204 means that the screw with a diameter of 12mm will move a circle and will drive the load up to 4mm.