1、The 8mm lead screws have 4 threads with a 2mm pitch which yields 8mm of linear travel of a lead screw nut for each rotation of the lead screw. 2、Often used as an accessory in the field of robotics, an excellent mechanism for converting rotation into linear motion. 3、Using this lead screw can achieve the accuracy of a 3D printer or the strength of a scissor jack. 4、The 8mm lead is compatible with many components, such as 8mm pillow blocks and 8mm thrust bearings. 5、The lead screw made of stainless steel is anti‑rust and anti‑corrosion, and can maintain good performance even after long‑term use. 1 x Lead Screw Item Type: Lead ScrewModel: 5501-0804-0300Material: Stainless steelLead: Approx. 8mm / 0.3inThread Number: 4Pitch: Approx. 2mm / 0.1inLength: Approx. 300mm / 11.8inPurpose: Accessories in the field of robotics, an excellent mechanism for converting rotation into linear motion.