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 6240-00-172-8451
NSN 6240-01-021-7822
NSN 6145-01-179-9854
NSN 6645-00-599-8890
NSN 5950-01-507-8470
NSN 6220-01-481-3827
NSN 5920-00-658-7219
NSN 6130-01-254-8784
NSN 6685-00-067-5968
NSN 5895-01-375-6748
NSN 6150-01-245-3764
NSN 5950-01-474-5576