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 4140-00-437-3778
NSN 6650-01-211-9642
NSN 5925-01-374-1489
NSN 5855-01-222-1242
NSN 2925-01-440-7617
NSN 6320-01-497-3116
NSN 7035-01-271-1643
NSN 5960-01-232-3100
NSN 5965-01-461-4480
NSN 5895-01-431-8116
NSN 5998-01-500-0537
NSN 5925-00-081-1170