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 5920-01-551-1295
NSN 5915-01-442-6484
NSN 4140-00-264-5796
NSN 6685-01-261-2359
NSN 6110-00-549-6662
NSN 6645-01-185-7684
NSN 5905-01-442-4137
NSN 5905-00-082-0533
NSN 2925-01-187-5480
NSN 6685-01-387-6505
NSN 2925-01-440-7617
NSN 5999-01-138-7437