Connecting Cones 820-0250 and 820-0254 are particularly useful for connecting elements when specific orientation plane is required. For example in spatial filter 990-1000, or in Narrow Translation Stages 860-0060 joined for XYZ motion.
There is an M6 / M4 thread at one end and 50° cone at another. A component is fastened to the cone using an additional fastening screw.