一種管狀無螺紋物件,一端帶或不帶凸緣,設計用於插入孔中以減小孔的內徑,並保護周圍的主體結構免受應力、應變和/或振動造成的損壞。總長度必須超過外徑的25%,或主體週邊平面之間的最短距離。包括分成兩段或多段的物件,且軸承週邊的旋轉角度不超過180度(3.141弧度)。有關橡膠製品,請參閱非金屬襯套。另請參閱軸承,套筒;錐形襯套;墊片,套筒;絕緣體,襯套;以及電導體襯套。不包括:襯套,鑽頭,夾具。
1.3450 inches nominal body inside diameter, square all corners corner shape, feat criticality code justification, 1.4250 inches nominal body outside diameter, helicopter, carrier based asw, sh-60f; helicopter, electronic countermeasures, eh-60a; helicopter, search and rescue, hh-60h; helicopter, black hawk uh-60a; helicopter, ug-60a/uh-60d; helicopter, lamps mark iii, sh-60b; aircraft, hercules c-130; aircraft black hawk (mh-60k special operations aircraft); hh-60l medivac; helicopter, seahawk, h-60 end item identification