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 4140-00-995-3268
NSN 5835-01-632-6627
NSN 4140-01-539-0548
NSN 5920-01-451-4260
NSN 5895-01-495-1002
NSN 2925-01-320-6512
NSN 6240-01-075-6559
NSN 5935-00-521-4637
NSN 5998-01-076-4729
NSN 5895-01-259-2598
NSN 4140-00-147-5864
NSN 2925-01-613-9811