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 5990-01-043-3400
NSN 5950-01-003-8636
NSN 5945-01-335-8233
NSN 5915-00-467-1585
NSN 6610-01-168-1663
NSN 6685-01-490-3505
NSN 6130-00-289-7050
NSN 5895-01-270-1018
NSN 5930-00-564-4293
NSN 5855-01-187-2293
NSN 6645-01-436-7381
NSN 6645-01-376-2336