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.
valve, pressure end item identification, cleaning, packaging, and marking iaw mil-std-1330d departure from cited document, aisi assn std all material responses overall material document and classification, steel comp 440a or steel comp 440b or steel comp 440c overall material, zzzw criticality code justification