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 6240-01-145-4916
NSN 4140-01-282-5554
NSN 6650-01-025-8803
NSN 6685-00-270-5855
NSN 6220-01-277-8297
NSN 6610-00-793-0010
NSN 5935-01-519-9349
NSN 6220-01-606-5086
NSN 5935-01-552-9695
NSN 5999-01-040-5354
NSN 5960-01-261-6753
NSN 6240-01-229-5712