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This is a generic stainless steel case bezel screw for the Audemars Piguet Royal Oak references 77321 and 67650, measuring 7.0mm (length) × 1.58mm (thread diameter), available in two head diameters: 1.8mm and 2.16mm. It secures the iconic octagonal bezel to the case middle, an essential fastener in the Royal Oak‘s distinctive design language. As an aftermarket replacement, this screw offers watchmakers a cost‑effective solution for a damaged, stripped, or lost original bezel screw.
Material & Finish: High‑quality stainless steel (316L), finely polished to match the appearance of the original screw.
Dimensions: Overall length 7.0mm, thread diameter 1.58mm (metric fine thread). Two head diameter options: 1.8mm and 2.16mm, to suit different production batches of Royal Oak models.
Function: Secures the octagonal bezel to the case middle. The Royal Oak bezel is typically fastened by eight uniformly spaced screws, ensuring tight fit and water resistance.
Compatible Models: Audemars Piguet Royal Oak 77321 (33mm case, automatic, often diamond‑set ladies‘ model) and 67650 (quartz ladies’ model). May also fit other 33mm or 34mm Royal Oak references – compare with the original screw before use.
Q1: How to choose between the 1.8mm and 2.16mm head diameters?
A: Measure the head diameter of your original screw. If it is approx. 1.8mm, select the 1.8mm version; if approx. 2.16mm, select the 2.16mm version. The wrong size will cause the screw head to protrude or sit too deep.
Q2: Can I install the screws without threadlocker?
A: Not recommended. Bezel screws are subject to vibration during wear. Without threadlocker, they will gradually loosen, creating a gap that compromises water resistance. Low‑strength threadlocker prevents loosening while remaining removable.
Q3: The screw head slot is stripped. How can I remove it?
A: Try placing a rubber band over the screwdriver tip for extra grip. If still stuck, a micro‑drill or screw extractor may be needed (high risk). Professional removal is recommended. After installing a new screw, always use the correct screwdriver.
Q4: Can this screw be used on a 41mm Royal Oak (e.g., 15400)?
A: No. The bezel screws on 41mm Royal Oak models are longer (approx. 8–9mm) and have a different thread diameter. Do not mix.
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