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 6240-00-292-3237
NSN 6685-01-585-4482
NSN 4140-01-172-4637
NSN 5925-01-196-5123
NSN 5975-00-465-6397
NSN 5855-00-337-3679
NSN 6620-00-406-5906
NSN 5975-01-031-9615
NSN 6150-00-728-9764
NSN 5999-00-447-1870
NSN 6685-00-215-0557
NSN 5905-01-621-2667