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 5990-00-999-5624
NSN 6650-00-698-5869
NSN 6240-00-495-6763
NSN 6240-00-533-1493
NSN 6650-01-124-4314
NSN 6150-01-168-0530
NSN 6610-01-647-7412
NSN 4140-01-189-0217
NSN 6685-01-097-6329
NSN 5998-01-329-8484
NSN 5960-01-406-9467
NSN 6130-01-129-1097