CPV code 42637300 designates Machine tools for milling metal in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
42637300 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 42637000 (Machine tools for drilling, boring or milling metal).