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The Omega 8500 Movement Screw For Pre-assembled Upper Automatic Bridge (7228500A3542) is a genuine Swiss-made component for the Omega Caliber 8500 Co‑Axial automatic movement. As identified in the Omega 8500 technical manual, this screw (reference 3542) is used to secure the pre‑assembled upper automatic bridge during movement assembly . It is an essential part for professional movement servicing and restoration, ensuring correct fixation and stability of the automatic winding system.
Genuine Omega part – authentic Swiss-made component for Caliber 8500
Upper automatic bridge screw – secures the pre-assembled upper automatic bridge
Critical for assembly – ensures proper fixation of the automatic winding system
Service replacement part – recognized in official Omega technical documentation
Precision-engineered – manufactured to Omega’s factory specifications
Part Number: 7228500A3542 (also listed as Ref. 3542)
Compatible Movement: Omega Caliber 8500 (includes 8500A, 8500B, 8500G variants)
Movement Diameter: 29.00 mm
Movement Height: 5.5 mm
Jewels: 39
Frequency: 25,200 vph (3.5 Hz)
Power Reserve: 60 hours (two series-coupled barrels)
Escapement Type: Co‑Axial
Position: Upper automatic bridge
Origin: Switzerland (Omega factory part)
Quantity: Single piece
Condition: Brand new
Service and overhaul of Omega Caliber 8500 movements
Upper automatic bridge assembly – securing the automatic bridge during reassembly
Automatic winding system restoration – ensuring correct screw tension and fixation
Restoration of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500‑powered models
Suitable for professional watchmakers and authorized service centers
1. Is this a genuine Omega part?
Yes, this is a genuine Omega factory part (reference 7228500A3542), manufactured in Switzerland. It is identified in the official Omega 8500 technical manual as “Screw for pre-assembled upper automatic bridge” (Ref. 3542) .
2. How many of these screws are used in the Caliber 8500?
According to the Omega 8500 assembly manual, the pre-assembled upper automatic bridge is secured using multiple screws. The 3542 reference is one of the screws used in the upper automatic bridge assembly stage .
3. Which movement versions is this screw compatible with?
This screw is compatible with Omega Caliber 8500 series, including variants 8500A, 8500B, and 8500G. The 8500 movement is used in models such as the De Ville Hour Vision, Seamaster Aqua Terra, and Constellation .
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