롤러 베어링의 롤링 요소를 제공하는 단단하거나 속이 빈 원통형 본체입니다.
qq-b-637 fed spec single material response separator slug material document and classification, 2.0000 inches nominal overall length, copper alloy 464 separator slug material, hinged ballistic doors details below 25 (exterior) end item identification, hing pin bearing part name assigned by controlling agency