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 5990-00-766-7179
NSN 5910-01-092-0502
NSN 6620-00-394-1812
NSN 4140-01-355-4916
NSN 2925-01-170-1089
NSN 5915-01-178-5706
NSN 6685-01-054-4409
NSN 4140-00-315-0146
NSN 5935-01-622-5441
NSN 5960-00-847-6840
NSN 5935-01-330-6507
NSN 5999-01-650-4551