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 5960-00-581-2389
NSN 5910-00-110-7320
NSN 6645-01-391-1983
NSN 5975-01-598-5935
NSN 5910-01-339-8510
NSN 2925-00-486-8640
NSN 6610-00-506-0654
NSN 5915-01-077-4213
NSN 5965-00-910-3233
NSN 5835-01-031-7265
NSN 5975-01-025-5794
NSN 5855-00-058-1293