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 6150-00-252-1960
NSN 6320-00-004-9158
NSN 5960-01-589-6846
NSN 6620-01-590-7035
NSN 2925-01-277-5882
NSN 5985-00-900-0544
NSN 2925-01-518-9038
NSN 6240-01-231-0452
NSN 4140-01-463-8749
NSN 5915-01-233-8473
NSN 6320-00-108-7049
NSN 6145-01-588-2847