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 5990-01-632-0969
NSN 5990-00-130-7293
NSN 6685-01-169-6678
NSN 5925-00-003-4722
NSN 6130-01-559-0000
NSN 5975-01-455-4452
NSN 6620-00-144-7201
NSN 6240-00-946-2173
NSN 6240-01-034-9457
NSN 5910-01-616-7145
NSN 4140-01-571-9155
NSN 2925-00-026-0005