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 5965-00-639-6621
NSN 6645-00-486-8649
NSN 5990-00-621-0572
NSN 5990-01-294-6198
NSN 6110-01-287-9607
NSN 7035-01-122-1264
NSN 5999-01-502-6911
NSN 5855-01-565-5030
NSN 5975-01-562-4397
NSN 5996-01-212-9866
NSN 6620-00-257-2783
NSN 6150-00-254-9971