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 5930-01-370-3516
NSN 7035-01-520-7243
NSN 6320-01-425-1417
NSN 6320-00-823-2015
NSN 5998-00-152-4478
NSN 5930-01-536-9935
NSN 5945-00-467-3020
NSN 2925-00-614-1758
NSN 6150-01-313-2530
NSN 5835-00-170-5238
NSN 7035-01-518-7625
NSN 5945-01-007-9411