實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
2.0000 inches nominal overall length, copper alloy 464 separator slug material, qq-b-637 fed spec single material response separator slug material document and classification, hinged ballistic doors, gang operated-details 25,above (exterior & interior) end item identification, bearing pin hinge part name assigned by controlling agency