Nut for use in fixing device for fixing holding plate of endoscopic system in casing of low pressure turbine of aircraft, has upper part partially or completely covering gripping zone of lower part, which includes central cavity

摘要

The nut (200) has a lower part (202) including a central cavity (212) adapted to receive a fixing screw. The central cavity extends over a total height of the nut. An upper part (201) partially or completely covers a gripping zone (203) of the lower part. The upper part includes a circumference side (204) of a curve shape or a circular shape. The gripping zone includes planar sides (205, 206), which are connected by a curved side (207) and another curved side, respectively. The lower part is prolonged by a support (209). An independent claim is also included for a casing.