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 5950-00-596-8102
NSN 5910-00-983-4943
NSN 5905-01-423-8258
NSN 2925-01-394-9658
NSN 5975-00-904-0002
NSN 6610-01-397-1621
NSN 5950-00-474-7137
NSN 5895-00-021-6960
NSN 6620-01-342-5953
NSN 6620-01-595-0024
NSN 6685-00-325-2752
NSN 5985-00-985-6159