One flat on diameter 1.250 in. From horizontal centerline
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 6130-01-017-3783
NSN 5999-01-357-6399
NSN 4140-01-429-8545
NSN 5910-01-442-7789
NSN 6650-01-258-5871
NSN 5935-01-576-3166
NSN 2925-01-607-4340
NSN 6135-01-193-8154
NSN 5935-01-415-0887
NSN 6620-01-557-6512
NSN 6650-00-111-3399
NSN 5920-01-563-6326