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 6620-01-249-8696
NSN 6620-01-161-1594
NSN 6620-01-444-8261
NSN 5990-01-633-9503
NSN 5985-01-604-6479
NSN 6130-00-027-5186
NSN 5945-01-595-2197
NSN 5895-01-594-2368
NSN 5930-01-282-8244
NSN 6240-00-915-1705
NSN 5999-01-085-5540
NSN 6130-01-358-0009