Oleodinamica Marchesini CR01058Z is the separately supplied 1/2" BSP hollow mounting bolt listed on the VAU AG-AR factory sheet. It suits the documented V0455 VAU 1/2 AG-AR motor-mounted valve arrangement. The exact accessory row lists 350 bar maximum pressure and does not state a flow rating.
The drilled bolt carries oil through the mounting connection while securing the valve to the compatible motor interface. Its male and female 1/2" BSP connections and the separate axial drawing segments of 49 mm + 23 mm must be checked against the original accessory drawing. No unlabelled overall length or internal-bore diameter is inferred.
The factory sheet states that the bolt is not supplied with the companion valve. This profile is for the bolt itself. The valve body, relief spring, O-rings and complete motor are not inferred as included, and the valve mass or spring setting is not assigned to this fastener.
The local technical PDF contains the complete relevant manufacturer spread, including the named article or accessory drawing. Neighbouring valve ratings and optional configurations apply only to the corresponding identified part. Any 50 °C oil temperature and 30 cSt viscosity beside curves are reference conditions.
