This washer serves as the housing locating ring for an axial cylindrical roller bearing arrangement, designed to be combined with a matching cage and roller assembly and shaft locating washer to form a complete single-direction thrust set. The outside diameter is 100.0 mm and the net mass is 135.8 g. Its flat raceway face provides the stationary bearing surface against which the roller and cage assembly runs, transmitting axial load in one direction only. Since GS81115 is a single-direction axial locating washer, it must be mounted together with the corresponding shaft washer and roller and cage unit, with the assembly aligned so that the flat face contacts the housing seat squarely to ensure even load distribution across the raceway. As a bare steel ring without integrated sealing or lubrication provisions, it requires external supply of grease or oil suited to the operating speed and load, and the mating components must be selected to match this locating washer for correct axial guidance.