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 5945-01-007-4595
NSN 6135-01-628-2903
NSN 6145-01-498-0113
NSN 5855-01-439-7214
NSN 6620-00-366-1365
NSN 5990-01-558-4536
NSN 6145-00-878-9611
NSN 6105-00-473-2314
NSN 6685-01-412-0767
NSN 6240-01-242-2292
NSN 5996-01-167-0027
NSN 6240-01-490-4462