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 5910-00-554-1422
NSN 6620-00-841-0346
NSN 6645-01-569-9087
NSN 5965-01-578-6911
NSN 5915-01-088-6908
NSN 6685-00-238-4682
NSN 5998-01-021-1410
NSN 6685-01-073-4912
NSN 4140-00-826-9031
NSN 6150-00-058-8669
NSN 6645-01-440-2962
NSN 5960-00-348-3015