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.
mil-c-24248,form 1,comp 4 mil spec single material response overall material document and classification, cobalt alloy overall material, 0.5625 inches nominal rolling element diameter, ball style designator