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 6145-00-144-0299
NSN 5999-01-157-6199
NSN 6650-01-644-7722
NSN 6150-01-202-3237
NSN 5855-01-179-2702
NSN 4140-00-203-3870
NSN 5925-01-602-7521
NSN 5990-01-097-4721
NSN 7035-01-379-3795
NSN 5996-01-062-0807
NSN 5985-00-841-1735
NSN 5855-01-088-8700