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 4140-01-429-8545
NSN 5910-01-415-3669
NSN 5855-01-067-8841
NSN 5960-01-628-2760
NSN 5999-01-367-9801
NSN 5985-00-277-0575
NSN 5985-01-610-1295
NSN 5905-01-321-1313
NSN 5935-01-123-2965
NSN 5895-01-048-0310
NSN 7035-01-304-4138
NSN 5930-01-413-3992