An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
Classification: Thrust ball bearings
NSN 5905-00-254-1417
NSN 6240-01-227-4178
NSN 5920-00-216-8665
NSN 5990-00-105-7831
NSN 5910-01-425-1375
NSN 6135-00-603-4859
NSN 4140-00-385-2925
NSN 5930-00-173-1072
NSN 6610-01-431-8575
NSN 2925-01-049-8906
NSN 5855-01-495-1038
NSN 6105-01-123-8887