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 5920-01-271-2304
NSN 4140-00-360-2457
NSN 6685-00-337-0983
NSN 5905-00-682-7859
NSN 5996-01-557-4160
NSN 4140-01-485-0417
NSN 5945-00-156-7256
NSN 5925-01-411-5101
NSN 5990-01-150-7443
NSN 6650-00-578-6543
NSN 6685-01-559-8364
NSN 6145-00-213-6807