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 5920-00-267-3109
NSN 6240-01-128-4906
NSN 6220-01-506-9654
NSN 6150-00-847-6692
NSN 5960-00-764-5927
NSN 6645-01-134-8137
NSN 5835-00-933-9609
NSN 4140-00-827-1821
NSN 5960-01-133-8884
NSN 6320-00-731-6134
NSN 7035-00-312-3055
NSN 5855-00-471-6002