Item Type: CNC Screw Model: 5501-0804-0450 Material: Stainless steel Helical Pitch: Approx. 8mm / 0.31in Line Number: 4 Pitch: Approx. 2mm / 0.08in Length: Approx. 450mm / 17.7in Purpose: Accessories in the field of robotics, an excellent mechanism for converting rotation into linear motion Package List 1 x CNC Screw 1Achieve the accuracy of a 3D printer or the power of a scissors jack, the pitch of the guide screw refers to the distance from one thread to another 2The 8mm guide screw have 4 threads with a pitch of 2mm. So that each time the guide screw rotates, the linear stroke of the guide screw nut is 8mm 3Come with 8mm diameter, making the product compatible with many components, such as 8mm sleepers and 8mm thrust bearings 4Adopt stainless steel material with corrosion resistance, heat resistance, high temperature and ultralow temperature resistance, good comprehensive mechanical properties and high strength 5An excellent mechanism to convert rotation into linear motion, used for accessories in the field of robotics