Breitling · Colt

Strap for Colt 36 Volcano Black / Rubber / Pin

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter36 mm
ReferenceA7438911/BD82/231S/A16S.1
FamilyColt
MovementBreitling caliber Caliber B74 Hours, Minutes, Seconds | Date | Chronometer
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The Colt A7438911/BD82/231S/A16S.1, seen from the bench

The Breitling Colt features the B74 caliber with hours, minutes, seconds, date and chronometer certification. The case has 18mm lugs for the strap. The model is identified by the reference A7438911/BD82/231S/A16S.1.

Frequently asked questions

What is the lug width of the Breitling Colt A7438911/BD82/231S/A16S.1?

The lug width of the Breitling Colt A7438911/BD82/231S/A16S.1 is 18mm. This measurement should be taken with a digital calliper positioned internally between the two lugs, perpendicular to the case. It is essential to respect this specification to ensure a correct strap fitting without forcing the lugs or creating lateral play.

What is the best strap for the Breitling Colt A7438911/BD82/231S/A16S.1?

For the Breitling Colt A7438911/BD82/231S/A16S.1, the most fitting options consistent with the model's instrumental character are: vegetable-tanned calf leather (develops an authentic patina over time), matte alligator (adds distinction without overpowering the design), nylon NATO (recalls the professional heritage of the line), and vulcanised rubber (for sport and aquatic use). A steel deployant clasp is the most elegant and practical closing option.

How do you change the strap on a Breitling Colt A7438911/BD82/231S/A16S.1?

To replace the strap on the Breitling Colt A7438911/BD82/231S/A16S.1, use a flat-head spring bar tool or a dedicated lug remover to extract the 18mm spring bars securing the strap to the lugs. Work on a soft surface to avoid scratching the case, and ensure replacement spring bars are of the correct diameter and length for this reference's lug geometry.

Are there aftermarket straps compatible with the Breitling Colt A7438911/BD82/231S/A16S.1?

Yes, any strap with an 18mm lug width is technically compatible with the Breitling Colt A7438911/BD82/231S/A16S.1. Milanostraps.it offers a curated selection of handcrafted straps in various materials — leather, alligator, NATO, rubber — available both made-to-order and ready to ship, all sized for a precise fit on this reference.

How long does a leather strap last on a Breitling Colt A7438911/BD82/231S/A16S.1?

The lifespan of a leather strap depends on the type of leather, maintenance routine and frequency of use. A quality vegetable-tanned calf strap, regularly conditioned and kept away from prolonged moisture, typically lasts 2 to 4 years. More premium leathers such as shell cordovan can reach 5 to 7 years. Casati Milano provides an 18-month guarantee against manufacturing defects on all its straps.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only