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 6645-00-904-2754
NSN 6220-01-524-2270
NSN 5910-01-561-9926
NSN 5985-01-624-4909
NSN 6320-01-147-9177
NSN 4140-00-925-5188
NSN 5915-00-615-9537
NSN 6620-00-433-9438
NSN 6240-00-398-0740
NSN 4140-00-756-7135
NSN 5835-01-599-1876
NSN 6150-00-288-6245