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 6620-01-111-8210
NSN 6240-01-448-6781
NSN 5945-00-316-0924
NSN 5905-00-021-3792
NSN 6135-01-520-4199
NSN 6105-01-236-0799
NSN 5999-00-901-4689
NSN 4140-00-269-5795
NSN 5998-00-222-5293
NSN 7035-01-485-0269
NSN 6110-01-630-8633
NSN 5925-01-560-2364