Gives the main dimensions and tolerances for a range of thin-walled half bearings. Recommends a range of wall thicknesses in order to permit a choice of a shaft size that can accommodate the detailed design features for the application under consideration. Certain dimensions and tolerances of thin-walled half bearings cannot, be directly measured, it was considered necessary to specify the methods for checking these dimensions and tolerances. Includes field of application, reference, surface finish and method of checking peripheral length.