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 4140-00-784-7960
NSN 5915-01-270-6883
NSN 5910-01-250-3124
NSN 5915-01-139-1249
NSN 5905-01-482-7333
NSN 5930-00-411-8830
NSN 6130-01-515-8500
NSN 5930-00-164-0915
NSN 6110-00-583-3911
NSN 5910-00-966-4562
NSN 6220-01-156-4564
NSN 5996-01-495-0763