ローラー ベアリングの転動体となる、中実または中空構造の円筒形本体。
hinged ballistic doors, gang operated-details 25,above (exterior & interior) end item identification, bearing pin hinge part name assigned by controlling agency, copper alloy 464 separator slug material, qq-b-637 fed spec single material response separator slug material document and classification, 2.0000 inches nominal overall length