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This is a generic stainless steel pusher retaining screw (pusher screw) for the Audemars Piguet Royal Oak Offshore chronograph reference 26400, measuring 10.2mm (outer diameter) × 1.6mm (thread diameter). This screw secures the chronograph pusher from the inside of the case, serving as an ideal aftermarket replacement for an original screw that has stripped threads, a worn head, or corrosion.
Precise Dimensions – 10.2mm outer diameter, 1.6mm thread diameter, exact fit for the 26400 pusher retaining system.
Stainless Steel – Corrosion-resistant and durable for long-term reliability.
Core Function – Secures the chronograph pusher from inside the case, preventing loosening or loss.
Generic Aftermarket – Non-original but precisely engineered to factory dimensions for direct replacement.
Fixes Common Issues – Replaces original screws with stripped threads, worn heads, or corrosion.
| Parameter | Details |
|---|---|
| Compatible Model | AP Royal Oak Offshore 26400 chronograph |
| Type | Generic aftermarket |
| Outer Diameter | 10.2 mm |
| Thread Diameter | 1.6 mm |
| Material | Stainless steel |
| Function | Secures chronograph pusher (inside case) |
1. Is this a genuine AP screw?
No. It is a generic aftermarket replacement, not original, but matches the 26400 pusher retaining screw dimensions.
2. Which specific models does it fit?
Primarily the Royal Oak Offshore 26400 series (e.g., 26400IO, 26400AU). Other models like 26170 or 26470 may have different dimensions – measure your original screw.
3. What should I pay attention to during installation?
Installation requires case and movement disassembly to access the inside. Professional watchmaker assistance is recommended. Also inspect the pusher sealing gaskets to maintain water resistance.
4. Is this screw included with a pusher set?
This listing is for the retaining screw only – the pusher body, spring, and gaskets are not included. Purchase separately as needed.
5. How can I be sure this screw fits my watch?
Remove your original pusher retaining screw and measure its outer diameter (should be 10.2mm) and thread diameter (1.6mm). If they match, it will fit.
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