A homogenous spherical body, a series of which provides the rolling elements in a bearing, ball (as modified). The item is designed primarily to alleviate friction. It may have other usages such as the checking component in a ball-type check valve. Excludes:ball,check; ball,valve,ported.
steel comp 440a or steel comp 440b or steel comp 440c overall material, ams 7445 assn std all material responses overall material document and classification, ball style designator, 0.0312 inches nominal rolling element diameter