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 5855-01-020-7982
NSN 5895-01-104-6472
NSN 7035-01-174-1029
NSN 6110-00-029-9116
NSN 5935-01-602-8138
NSN 5990-01-204-4874
NSN 2925-01-422-1542
NSN 5975-01-592-3439
NSN 5930-01-541-4144
NSN 5935-00-997-6879
NSN 5895-01-160-8101
NSN 5935-00-300-8525