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 5920-01-231-3615
NSN 5895-01-431-9790
NSN 5985-01-548-5218
NSN 6320-01-554-0901
NSN 5998-01-233-7431
NSN 6145-00-548-7195
NSN 6220-01-265-2705
NSN 5930-01-634-0659
NSN 5990-00-554-0366
NSN 6650-00-356-8405
NSN 6220-00-184-0362
NSN 6650-01-650-3335