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 5975-00-809-1000
NSN 6645-00-849-4429
NSN 5905-01-352-3293
NSN 5990-00-104-4903
NSN 6220-01-229-2393
NSN 6150-00-827-7042
NSN 4140-01-534-1589
NSN 6620-01-329-7510
NSN 5920-00-408-4423
NSN 6240-00-185-2023
NSN 6650-01-415-3332
NSN 5998-01-007-0738