This International Standard specifies the major boundary dimensions of single-direction and doubledirection thrust bearings with flat back faces.

In addition, it gives the minimum bore diameters of housing washers and maximum outside diameters of shaft washers of bearings in dimension series 11, 12, 13, 14, 22, 23 and 24.

Chamfer dimensions r_s and r_1s apply only at the corners indicated in figures 1 and 2. No dimensions are given for other corners; however, they should not be sharp.

Maximum chamfer dimensions are given in ISO 582.

Guidelines for the extension of this International Standard for single-direction thrust bearings are given in annex A.