W/2 grooves, bearing surface 2nd hole spaced 75 degrees cw from 2nd hole on 3.375 in. Bolt circle
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 7035-00-420-1310
NSN 7035-00-421-8710
NSN 4140-00-987-2925
NSN 6650-00-264-0664
NSN 5985-01-337-0000
NSN 6150-01-230-5522
NSN 5998-01-524-2008
NSN 5935-00-276-9413
NSN 6130-01-120-8347
NSN 4140-01-455-5170
NSN 5920-00-201-4914
NSN 4140-01-152-9161