The Allweiler key with part number 940.01 is a precise replacement part for the NISM 65-250/217 U3.1D W3-55/240 series. This component serves as a positive connection between the shaft and impeller or other rotating components to ensure effective power transmission. Manufactured to strict quality standards, the key guarantees reliable function and durability even under demanding operating conditions. Its exact fit minimizes play and prevents wear at the shaft connection. The material is designed for the specific loads in pumping systems. This original replacement part is essential for maintaining the performance and safety of your Allweiler pump. Ideal for maintenance and repairs in industrial facilities. Inquire for availability and pricing.