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 6620-00-202-5122
NSN 6320-01-125-3361
NSN 5985-01-594-4089
NSN 6650-01-397-8856
NSN 6145-01-557-9051
NSN 5950-01-429-8909
NSN 5985-00-156-1635
NSN 6150-01-547-2486
NSN 6645-01-195-6207
NSN 4140-00-185-9694
NSN 6650-01-100-3185
NSN 5905-01-574-7722