Rolex® calibre 510 screw for upper end piece
Genuine, Rolex ® part # 3250/1 hairspring - flat - no stud fits Rolex®500, Rolex®510, Rolex® 520, Rolex® 530
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Rolex®. Rolex® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic parts may devalue your watch.