Positioning screw, speed controller, supporting seat, aircraft engine and method

摘要: Disclosed are a positioning screw, speed controller, supporting seat, an aircraft engine and method. The invention discloses the screw. screw comprises head portion thread section, wherein end of section is in cone shape, first fuse hole formed inside through hole. Compared with prior art, has advantages that when used engine, cannot cause damage to working face on case, tightening torque convenient achieve, inconvenience be brought later work, besides, effective checking verifying can conducted current installation safety reliability installing effectively guaranteed, situations loses efficacy disengages due influence such as work environments, flight attitudes vibration occur, therefore, aviation domestic production parts realized maintenance cost lowered.