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.
7310-01-498-3957 kettle,steam jacketed p/n tdb-40 onboard 378 ft whec coast guard cutters end item identification