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 5935-01-108-1159
NSN 5950-01-311-6377
NSN 7035-01-287-9817
NSN 5925-01-411-6028
NSN 6150-01-062-7540
NSN 6110-00-222-8246
NSN 5930-00-049-7865
NSN 6110-01-435-1714
NSN 5950-00-306-4193
NSN 6620-01-474-4951
NSN 5905-00-959-5781
NSN 5990-01-641-5782