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。
0.312 inches nominal thread size, steel overall material, 0.7500 inches minimum and 0.7520 inches maximum bore diameter, 0.5625 inches nominal overall width, 1.2500 inches nominal outside diameter