Blancpain · Fifty Fathoms
Strap for Blancpain Fifty Fathoms 5085F.B-1140-52B
The Fifty Fathoms Chronographe Flyback Stainless / Blue / Blue Canvas takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width

What I'm asked about the Blancpain Fifty Fathoms 5085F.B-1140-52B
What strap size does the Blancpain Fifty Fathoms 5085F.B-1140-52B take?
The Blancpain Fifty Fathoms 5085F.B-1140-52B needs 23 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Blancpain Fifty Fathoms 5085F.B-1140-52B be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Blancpain Fifty Fathoms 5085F.B-1140-52B?
Yes, in 23 mm leather, as long as you don't wear it in the water: leather doesn't like the sea or the pool. For days in the water, rubber. On a 45 mm diver I go for a full-thickness strap, not a thin one. I don't keep rubber ready in 23 mm: write to me and I'll make it.
Which strap do you recommend for the Blancpain Fifty Fathoms 5085F.B-1140-52B?
Rubber if you wear it in the water; otherwise a 23 mm calf strap, full thickness. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.
More Fifty Fathoms
- Fifty Fathoms Bathyscaphe Ceramic / Black / Canvas23 mm
- Fifty Fathoms Bathyscaphe Ceramic / Black / NATO23 mm
- Fifty Fathoms Bathyscaphe Ceramic / Blue / NATO23 mm
- Fifty Fathoms Bathyscaphe Ceramic / Blue / Canvas23 mm
- Fifty Fathoms Bathyscaphe Stainless Steel / Grey / Bracelet23 mm
- Blancpain Fifty Fathoms 5000-1110-71S23 mm
- Fifty Fathoms Bathyscaphe Stainless Steel / Grey / Black Canvas23 mm
- Fifty Fathoms Bathyscaphe Stainless Steel / Grey / Sand Canvas23 mm
More Blancpain in 23 mm
- L-Evolution Carrousel Saphir Volant Une Minute TantalumL-Evolution
- L-Evolution Carrousel Saphir Volant Une Minute White GoldL-Evolution
- Le Brassus Carrousel Répétition Minutes Automata Red GoldLe Brassus
- Le Brassus Carrousel Repetition Minutes Red GoldLe Brassus
- Villeret Calendrier Chinois Traditionnel Platinum / WhiteVilleret
- Villeret Calendrier Chinois Traditionnel Red Gold / WhiteVilleret
For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
The atelier's website: casatimilano.com
