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 4140-01-522-1671
NSN 6110-01-144-1419
NSN 6650-01-633-9147
NSN 5905-01-181-6371
NSN 6150-01-105-5036
NSN 5920-01-386-9228
NSN 5985-00-708-2193
NSN 5905-01-005-8629
NSN 5905-00-319-4689
NSN 5950-01-437-2727
NSN 5965-00-840-8849
NSN 5915-00-584-3512