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 5998-01-119-0120
NSN 5930-01-104-5295
NSN 5960-01-010-3083
NSN 6110-01-040-9246
NSN 7035-00-104-7613
NSN 5945-01-634-0588
NSN 5930-00-968-3253
NSN 5975-01-533-8615
NSN 5985-01-453-3391
NSN 6685-00-275-4401
NSN 7035-01-341-9098
NSN 5975-01-243-5415