Lubricating ball indents
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 4140-01-534-9987
NSN 6620-01-039-5468
NSN 5855-01-634-0259
NSN 6320-01-457-9059
NSN 6610-01-210-8493
NSN 5905-01-039-8979
NSN 5996-00-960-1958
NSN 5985-01-263-2543
NSN 6110-01-371-6862
NSN 5990-01-146-9126
NSN 5895-00-989-0481
NSN 6135-00-998-5884