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 5950-01-050-5428
NSN 6130-01-064-8964
NSN 5920-01-559-5559
NSN 5985-01-398-5487
NSN 6220-01-168-7773
NSN 4140-00-789-2543
NSN 5935-00-204-9806
NSN 6685-00-684-3140
NSN 5855-01-543-8175
NSN 5920-01-644-7352
NSN 6220-01-327-4999
NSN 5920-01-381-6361