Custom Micro DC Reduction Motor GA12-N20-M3*34 Gear Motor with Lengthened Lead Screw High Torque 3V 6V 12V Manufacturer

Shaft diameter:

The diameter of threaded part is 3mm (M3 thread), and the diameter of optical axis at the end is 2mm
 

Shaft length:

34mm (the length of threaded part is 30mm and the length of optical axis at the end is 4mm)