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 5960-01-578-5537
NSN 5998-01-519-3947
NSN 6135-01-335-9184
NSN 5895-00-504-3210
NSN 5945-00-629-4328
NSN 5835-01-282-9768
NSN 5996-01-644-3247
NSN 5835-00-482-0924
NSN 5925-00-006-3539
NSN 6135-01-296-1860
NSN 5990-01-390-2177
NSN 2925-01-144-7106