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 6240-00-983-4583
NSN 4140-01-339-7625
NSN 5985-01-433-2400
NSN 6220-01-380-1211
NSN 5910-01-107-5169
NSN 5950-00-421-3039
NSN 5950-01-372-0701
NSN 5925-01-222-5349
NSN 5990-01-382-5364
NSN 6110-01-326-2541
NSN 5990-01-655-1437
NSN 6150-00-339-2965