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This is a generic strap screw for the Audemars Piguet Royal Oak Offshore reference 25721, measuring 11.6mm (overall length) × 1.55mm (thread diameter) with a 2.0mm screw head diameter. Crafted from precision‑polished stainless steel, this screw secures the heavy steel bracelet links to the case or clasp. The 25721, known as “The Beast”, is the first Royal Oak Offshore launched in 1993, powered by the Caliber 2126/2840 automatic movement.
Precise Dimensions – 11.6mm length, 1.55mm thread, 2.0mm head, fits 25721 bracelet link connections.
Polished Stainless Steel – High gloss, corrosion-resistant, matches Offshore case finish.
Optimized for 25721 – Designed for the robust bracelet of the first Offshore “The Beast”.
Generic Aftermarket – Non-original but matches factory dimensions exactly.
Cost-Effective – Affordable alternative to genuine parts for repairs or bracelet refurbishment.
| Parameter | Details |
|---|---|
| Compatible Model | AP Royal Oak Offshore 25721 (The Beast) |
| Type | Generic (aftermarket) |
| Overall Length | 11.6 mm |
| Thread Diameter | 1.55 mm |
| Head Diameter | 2.0 mm |
| Material | Precision-polished stainless steel |
| Function | Secures bracelet links to case or clasp |
1. Is this a genuine AP screw?
No. It is a generic aftermarket screw, non-original, but matches the 25721 strap screw dimensions exactly.
2. Is this screw compatible with other Offshore models?
No. The 25721 (first generation 42mm Offshore) uses unique screw dimensions (11.6mm) different from later models like 15710 (12.9mm bezel screw) or 26400. Do not mix.
3. Should I use threadlocker?
Yes, a low-strength threadlocker (e.g., Loctite 222) is recommended on the threads to prevent loosening. Apply sparingly and avoid over-tightening.
4. Does the screw include a nut?
No. Some 25721 bracelet connections use direct threading; others may use a separate nut. This listing is for the screw only. Verify your watch’s design.
5. How can I be sure this screw fits my watch?
Measure your original strap screw total length (11.6mm), thread diameter (1.55mm), and head diameter (2.0mm). If they match, it will fit. Typical positions include lug-to-first link and clasp joints.
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