一種用緊定螺絲、鍵或銷安裝在軸上的擋圈,專門用於軸承的定位。有關通用軸環,請參閱軸環。不含:推力軸承墊圈;以及軸承襯套。
1.5900 inches nominal overall width, used on ifv/cfv end item identification, 2.7500 inches nominal outside diameter, qq-a-225/8 fed spec single material response overall material document and classification, 1.3810 inches nominal bore diameter