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 5985-01-040-0903
NSN 5990-01-113-0303
NSN 6135-01-620-7299
NSN 6130-01-192-2499
NSN 5996-01-208-7862
NSN 6150-01-655-1886
NSN 6610-01-101-5909
NSN 2925-00-113-1835
NSN 5985-00-148-8233
NSN 5855-00-411-8688
NSN 5930-01-350-2939
NSN 5835-01-108-4980