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 4140-01-356-5614
NSN 5895-00-270-6595
NSN 6620-00-246-5159
NSN 6150-01-345-3555
NSN 5965-01-010-1258
NSN 5905-01-552-4645
NSN 7035-01-106-3476
NSN 4140-01-601-5471
NSN 5975-01-397-8805
NSN 5925-01-634-0664
NSN 5915-00-422-5222
NSN 2925-01-604-8984