13 splines equally spaced inside dia
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 4140-01-091-5188
NSN 5965-01-207-0991
NSN 6650-01-046-7795
NSN 5925-00-090-7403
NSN 5930-00-350-8359
NSN 6685-01-305-1524
NSN 5915-00-868-9695
NSN 5855-01-593-6422
NSN 5920-01-361-8835
NSN 2925-01-422-9284
NSN 6150-00-495-2723
NSN 5950-01-437-2725