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 6610-00-955-2021
NSN 5950-00-584-4490
NSN 5999-01-143-3633
NSN 5895-00-437-2405
NSN 6620-01-303-2563
NSN 6130-00-543-1302
NSN 6240-01-038-6618
NSN 5930-00-344-0297
NSN 5905-01-400-2607
NSN 5999-01-455-7013
NSN 4140-01-181-0167
NSN 5930-00-723-9595