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 6610-01-555-8791
NSN 6645-00-801-8237
NSN 6220-01-444-4913
NSN 5910-01-206-0488
NSN 6650-01-065-4008
NSN 5930-01-131-2863
NSN 5920-01-634-0250
NSN 6320-01-224-0063
NSN 5905-01-322-4466
NSN 6105-00-952-0622
NSN 6220-01-578-7063
NSN 5920-01-186-3953