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 4140-01-367-0791
NSN 2925-01-359-4027
NSN 6220-01-590-1088
NSN 5835-00-223-7235
NSN 6240-00-372-4841
NSN 6240-01-158-6601
NSN 6645-01-515-7507
NSN 5985-00-729-8180
NSN 5999-00-151-9955
NSN 5835-01-363-4527
NSN 5999-01-533-9899
NSN 5965-01-241-0553