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 5990-00-288-1820
NSN 6620-00-841-0346
NSN 5945-01-237-2592
NSN 5950-00-286-3301
NSN 5950-01-389-9576
NSN 2925-01-460-1601
NSN 5925-01-245-1410
NSN 5998-01-205-2767
NSN 5996-00-827-2094
NSN 6240-01-558-4538
NSN 6320-00-593-0379
NSN 5920-00-921-0390