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 5855-01-040-3881
NSN 5950-01-289-7645
NSN 4140-00-501-7833
NSN 5905-00-984-0438
NSN 5910-00-066-4391
NSN 5835-00-532-5910
NSN 5945-01-360-7424
NSN 6685-01-467-3035
NSN 5835-01-612-4753
NSN 5915-00-584-3512
NSN 2925-00-192-1166
NSN 6320-01-532-7491