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 6145-01-227-5743
NSN 6685-01-447-0179
NSN 5855-01-003-7102
NSN 6130-01-447-2797
NSN 6620-00-865-7932
NSN 5935-01-146-9335
NSN 5950-00-802-8585
NSN 6620-00-010-8190
NSN 7035-00-919-3381
NSN 6685-01-145-3938
NSN 5960-00-553-7338
NSN 6685-01-531-8945