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.
spindle part name assigned by controlling agency, dog hatch assy; mission space hatch end item identification, 2 1/2 in dia.; material is nitronic 60 special features