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 5855-01-324-3756
NSN 5925-00-674-8318
NSN 6645-01-200-5289
NSN 6645-01-400-2119
NSN 7035-01-474-9537
NSN 5950-01-286-3601
NSN 6645-01-363-5944
NSN 6110-01-025-0507
NSN 5960-01-425-1454
NSN 5920-01-334-2903
NSN 5965-00-100-1291
NSN 5905-01-278-6376