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 4140-01-155-3101
NSN 5855-01-513-5684
NSN 5895-00-724-5347
NSN 5925-00-144-0482
NSN 5965-01-350-1890
NSN 5985-01-476-1106
NSN 6220-01-443-6787
NSN 5855-00-560-0110
NSN 5945-00-167-7544
NSN 6135-01-529-8523
NSN 5950-01-082-4300
NSN 6620-01-508-9702