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 6150-01-500-1918
NSN 5998-00-857-1463
NSN 7035-01-160-4423
NSN 5920-00-967-1396
NSN 6110-00-821-5534
NSN 7035-01-072-7785
NSN 5945-00-081-3193
NSN 4140-00-155-8012
NSN 5905-00-602-4405
NSN 6620-01-168-8450
NSN 5998-01-333-0000
NSN 5920-00-823-0969