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 5985-01-288-1785
NSN 6320-01-054-3046
NSN 5999-00-664-1818
NSN 7035-01-555-5260
NSN 6135-00-027-3914
NSN 5996-00-222-6049
NSN 6645-01-030-0662
NSN 5945-00-078-2265
NSN 5935-00-391-5883
NSN 2925-01-391-9247
NSN 6150-01-373-7771
NSN 5996-00-325-6285