Blancpain · Fifty Fathoms

Strap for Blancpain Fifty Fathoms 5100-1127-NAT

The Fifty Fathoms Bathyscaphe Stainless Steel / White / Baby Blue Nato takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width20 mm
Case diameter38 mm
Reference5100-1127-NAT
FamilyFifty Fathoms
MovementBlancpain caliber 1315 Hours, Minutes, Seconds | Date
Year2013
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Standard spring bar · length 20 mm · Ø 1.8 mm double flange · industry standard, no brand part number

Fifty Fathoms Bathyscaphe Stainless Steel / White / Baby Blue Nato — watch

Your watch with our straps

Fifty Fathoms 5100-1127-NAT with Grand Cavalier Leather Strap Orange
Fifty Fathoms 5100-1127-NAT with Vintage Brown Calfskin Strap — Natural Patina
Fifty Fathoms 5100-1127-NAT with Brown Italian Leather Strap

Calf, Orange

Grand Cavalier Leather Strap Orange

€120

★ 4.9 · 12

1 / 83

Real photos of the strap and the case. No generated images.

What I'm asked about the Blancpain Fifty Fathoms 5100-1127-NAT

What strap size does the Blancpain Fifty Fathoms 5100-1127-NAT take?

The Blancpain Fifty Fathoms 5100-1127-NAT needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Blancpain Fifty Fathoms 5100-1127-NAT 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 5100-1127-NAT?

Yes, in 20 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 38 mm diver I go for a full-thickness strap, not a thin one.

Which strap do you recommend for the Blancpain Fifty Fathoms 5100-1127-NAT?

Rubber if you wear it in the water; otherwise a 20 mm calf strap, full thickness. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

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

Updated on · by Antonio Zichichi