Features 1、The lead screw is an excellent mechanism for converting rotation into linear motion. 2、The screw can be used to improve the accuracy of the 3D printer and the strength of the scissors jack. 3、Lead screw has 4 threads with a 2mm pitch which yields 8mm of linear travel of a lead screw nut for each rotation of the lead screw. 4、The threaded guide rod is compatible with many components, such as 8mm pillow blocks and 8mm thrust bearings. 5、Made of stainless steel, it has the characteristics of rust and corrosion resistance and can be used for a long time. Specification Item Type: Lead Screw Model: 5501-0804-0200 Material: Stainless steel Lead: Approx. 8mm / 0.3in Thread Number: 4 Pitch: Approx. 2mm / 0.1in Length: Approx. 200mm / 7.9in Purpose: Accessories in the field of robotics, an excellent mechanism for converting rotation into linear motion. Package List 1 x Lead Screw