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 6130-00-438-3905
NSN 4140-00-995-3268
NSN 7035-00-286-6221
NSN 5999-01-386-5327
NSN 5915-01-445-4107
NSN 2925-01-167-6500
NSN 6610-00-618-6192
NSN 6220-01-572-8674
NSN 7035-00-267-5424
NSN 5835-00-838-0707
NSN 5990-00-016-5648
NSN 6685-00-829-0587