What the thread found

• The Ultra1 gimbal requires a specific pin to lock the old-type F-bracket in low mode position
• The pin is located off-center in the gimbal socket and secures the arm post
• Some Ultra1 gimbal kits came with an unmarked screw whose purpose was unclear until identified by technical support
• Different low mode bracket variants may use different fastening mechanisms
• Technical support at the gimbal manufacturer can provide missing hardware or specifications for fabrication

Depends on

• Thread size and exact specifications were not definitively determined in the discussion
• The screw pitch could not be accurately measured using metric tools to convert to inch specifications
• The discussion involved only one or two example units and their specific configurations

Parts

Low Mode, Arm Post

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