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 6320-00-925-0558
NSN 5950-00-673-8280
NSN 5925-01-490-2649
NSN 2925-01-564-8043
NSN 6220-01-457-2318
NSN 5996-00-124-8666
NSN 6220-00-817-8692
NSN 5910-00-402-2296
NSN 5985-01-634-0635
NSN 6150-00-815-5984
NSN 5999-01-209-3202
NSN 5930-01-304-1727