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 6620-01-426-2220
NSN 6685-00-362-1649
NSN 4140-01-597-3442
NSN 5905-01-156-1517
NSN 5990-01-040-1320
NSN 2925-01-604-8984
NSN 6220-01-156-4564
NSN 5930-01-460-9110
NSN 5985-01-488-8449
NSN 5835-00-065-6757
NSN 6130-00-232-9449
NSN 5935-01-059-1987