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 5925-00-325-4424
NSN 6645-00-879-9941
NSN 5945-00-012-5437
NSN 2925-00-678-5502
NSN 5965-00-177-2932
NSN 5945-01-472-0122
NSN 5999-00-349-1345
NSN 5975-01-426-8968
NSN 5960-01-586-5235
NSN 5950-01-200-6359
NSN 4140-00-555-3856
NSN 5895-00-872-6070