Oris · BC3

Strap for Oris BC3 01 735 7641 4263

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
Reference01 735 7641 4263
FamilyBC3
MovementOris caliber Oris 735 Hours, Minutes, Seconds | Date, Day

Spring bar

Swiss Standard universal spring bars

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

Straps for the BC3 01 735 7641 4263

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The BC3 01 735 7641 4263, seen from the bench

The Oris BC3 features an automatic caliber 735 movement with indication of hours, minutes, seconds, date and day of the week. The stainless steel case measures 42mm in diameter with 22mm lugs. The model belongs to the Aviation collection and is characterized by the functional design oriented for aeronautical use.

Frequently asked questions

What is the lug width of the Oris BC3 01 735 7641 4263?

The Oris BC3 01 735 7641 4263 features a lug width of 22mm, which is the standard dimension for the 42mm case segment. This measurement should be verified by measuring perpendicularly between the two case lugs using a digital caliper.

What is the best strap for the Oris BC3 01 735 7641 4263?

The choice depends on intended use. For formal contexts, we recommend alligator leather with vegetable tanning in dark brown tones; for tactical and daily wear, a NATO in organic cotton or Cordura nylon; for water sports, technical rubber or FKM ensures maximum functionality. Optimal aesthetic balance is achieved with noble leather (alligator, cordovan) or authentic military textiles.

How do I change the strap on the Oris BC3 01 735 7641 4263?

Use a spring bar tool (a forked implement) to disengage the attachment pins. Insert the tool tip into the groove beneath the pin and push gently inward to compress the internal spring; the pin will slide out of the case. Position the new strap and reinsert the pin until it clicks. Never force manually: proper tooling prevents damage to the case lugs.

Can I use an aftermarket compatible strap on this Oris?

Yes, any 22mm strap is compatible with the Oris BC3 01 735 7641 4263. Always verify that the eyelet diameter matches the Oris pin diameter (typically 1.5mm). On milanostraps.it you will find selections of leather, NATO, and rubber straps already tested for this measurement.

How long does a leather strap last on the Oris BC3?

A quality artisanal leather strap, with vegetable tanning and appropriate thickness (1.2-1.5mm), lasts an average of 3-5 years of daily wear, provided prolonged exposure to stagnant moisture is avoided. Leather is a living material that ages and patinas: regular maintenance (cleaning with a damp cloth and occasional treatment with specific balms) significantly extends longevity.

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