The Collar Screw D9/M8 is a genuine Stihl OEM fastener specifically designed for Stihl petrol chainsaws, including models MS 290 and MS 310. This precision-made steel screw features an M8 thread and a 9 mm collar, ensuring accurate location and clamping of parts within the chainsaw. Constructed with robust materials and adhering to factory tolerances, the Collar Screw D9/M8 guarantees a reliable fit that supports safe operation even under vibration. Ideal for routine servicing and repairs, this fastener effectively replaces worn or damaged originals without the need for modification.