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 4140-01-299-3357
NSN 6130-01-242-9778
NSN 6610-01-099-6186
NSN 5965-01-650-1764
NSN 6240-01-397-1924
NSN 5895-00-481-1474
NSN 5910-00-059-6359
NSN 5910-01-394-5013
NSN 6150-01-634-0575
NSN 5975-00-541-8531
NSN 6240-01-369-9883
NSN 6320-00-853-1920