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 5960-00-951-9551
NSN 6145-00-686-5065
NSN 6145-01-050-5435
NSN 5925-01-019-1983
NSN 5920-01-372-6467
NSN 5998-01-641-3699
NSN 5975-01-650-0544
NSN 5945-01-500-2140
NSN 6685-01-552-2945
NSN 6150-01-242-9049
NSN 6110-00-903-6481
NSN 7035-01-544-4615