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 5930-01-376-2271
NSN 5895-01-625-8119
NSN 6645-01-564-7129
NSN 5990-01-341-5735
NSN 6620-00-543-6562
NSN 5985-00-800-5438
NSN 6110-01-497-8051
NSN 6150-01-483-5377
NSN 5835-00-987-9341
NSN 5930-01-309-2097
NSN 5990-01-548-5979
NSN 6220-00-076-0428