롤러 베어링의 롤링 요소를 제공하는 단단하거나 속이 빈 원통형 본체입니다.
hinged ballistic doors details below 25 (exterior) end item identification, hing pin bearing part name assigned by controlling agency, 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