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 5905-01-173-2557
NSN 6105-01-034-6409
NSN 5835-01-092-6759
NSN 5930-01-492-6029
NSN 5925-00-525-4037
NSN 7035-01-006-3186
NSN 5895-00-115-2879
NSN 5965-00-785-5100
NSN 5905-00-283-5492
NSN 6240-01-457-3372
NSN 5999-01-417-9265
NSN 4140-01-549-2952