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 6610-01-389-3082
NSN 4140-00-120-1203
NSN 6130-01-157-3155
NSN 5965-01-252-8701
NSN 6620-01-360-4725
NSN 6135-00-269-5843
NSN 5985-00-254-6402
NSN 6645-01-364-7330
NSN 5925-01-392-4785
NSN 2925-00-831-7024
NSN 5945-01-261-1501
NSN 5985-01-521-9101