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 5930-00-007-7939
NSN 5920-00-552-1567
NSN 6110-01-514-7608
NSN 6110-00-042-4712
NSN 6320-01-021-6633
NSN 6105-01-368-7864
NSN 5905-01-541-5437
NSN 6685-01-415-3117
NSN 2925-01-247-8058
NSN 5935-01-044-5741
NSN 6105-01-431-8998
NSN 5920-00-397-2212