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 5960-00-057-4778
NSN 6610-01-384-1587
NSN 2925-00-471-1128
NSN 5975-00-901-5512
NSN 5855-01-429-8702
NSN 5905-01-505-7500
NSN 5945-01-557-9540
NSN 5855-01-376-0363
NSN 5965-01-552-6545
NSN 5925-01-010-2925
NSN 5965-00-693-4464
NSN 5990-01-215-5997