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 4140-00-597-5260
NSN 7035-01-066-8308
NSN 7035-00-495-2137
NSN 6650-01-487-7510
NSN 5835-01-161-7461
NSN 5920-01-577-7479
NSN 5950-01-218-5368
NSN 6110-00-224-6128
NSN 6685-00-012-3734
NSN 6650-00-336-0753
NSN 5960-01-648-1872
NSN 5998-01-053-1860