Symbol 2689 from ISO 7000 - Title/Meaning: High torque; high force Function/description: To indicate high torque is being applied; to identify the control that increases the torque or force to a higher level
pay attention to orientation of symbolAdditional information: 
Symbol shall be used in the orientation shown.
Own work using: iso.org/obp/graphics/grs/0960f3c7-bd20-48e7-ab18-abff89128738 200.png
Vectorization:  Mrmw