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 6240-01-291-7500
NSN 6220-01-621-6888
NSN 6110-00-141-1966
NSN 5965-01-230-5521
NSN 6650-00-688-8587
NSN 5975-01-495-9131
NSN 5945-01-575-0755
NSN 5950-01-487-3750
NSN 6620-00-411-0179
NSN 5990-01-498-0641
NSN 5998-01-408-5822
NSN 6685-01-501-4901