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 5990-01-101-5097
NSN 6645-01-497-6543
NSN 5905-00-906-1131
NSN 5945-01-065-7037
NSN 5930-01-623-0234
NSN 5930-01-332-5774
NSN 4140-01-196-5984
NSN 6105-00-761-2372
NSN 5910-00-811-6586
NSN 5999-01-323-5807
NSN 5990-01-364-0813
NSN 6650-00-446-8787