Makeblock T6 L256mm Lead Screw and Brass Flange Nut Set can be self-locking, it is suitable for high torque requirements of a transmission, such as the Z-axis for a 3D printer. The lead screw also can carry a larger load than the threaded rod.

Features:
The lead screw is made of stainless  steel, and the flange nut is made of brass
Lead screw diameter: 6mm,  pitch: 2mm, length: 256mm
Lead screw diameter: 6mm,  pitch: 2mm, length: 13mm
The set can be self-locking
Part List:
1 ?? T6 L256mm lead screw
1 ?? T6 Brass Flange Nut