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Oris · BC3

Strap for BC3 Advanced Day Date Stainless Steel / Black / Rubber

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

Lug width

22mm
22 mm strapsAll Oris
Lug width22 mm
Case diameter42 mm
Reference01 735 7641 4164-07 4 22 05
FamilyBC3
MovementOris caliber Oris 735 Hours, Minutes, Seconds | Date, Day
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the BC3 01 735 7641 4164-07 4 22 05

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The BC3 01 735 7641 4164-07 4 22 05, seen from the bench

The Oris BC3 01 735 7641 4164-07 4 22 05 embodies Swiss aviator tool watch philosophy with robust construction and legibility for critical conditions. The 42 mm stainless steel case houses the Oris caliber 735 mechanical movement, certified chronometer, managing hours, minutes, seconds, day and date complications. The 22 mm lug width is the standard for this pilot family, balancing structural robustness and proportional elegance typical of recent European aviator watches.

Frequently asked questions

What is the lug width of the Oris BC3 01 735 7641 4164-07 4 22 05?

The lug width is 22 millimetres. Measured as the distance between the two lateral lugs (pinbars) of the case. This standard dimension allows mounting of artisanal straps with certified 22mm-compatible lugs.

Which strap is best suited to the Oris BC3?

For this 42mm steel case with aviator character, we recommend alligator or vegetable-tanned calf leather for a formal-casual approach. NATO straps in regenerated-fibre threads are ideal for daily and operational use. Rubber conveys sport-chic elegance for those prioritising comfort and versatility.

How do I change the strap on the Oris BC3?

Remove the watch from your wrist. Using a dedicated spring bar tool or gentle pin, push the pin from the rear of the case to extract it. Remove the old strap. Align the new strap and reinsert the pin, ensuring it is firmly seated on both sides. Verify security before wearing.

Can I mount a quality aftermarket strap on the BC3?

Yes. Any artisanal strap with 22mm lug width is compatible. Ensure the lugs are rigid enough to support the case weight (steel, 42mm) and that any metal buckle is made from durable material. Milano Straps straps are engineered for this compatibility.

How long does a natural leather strap last on a daily-wear watch?

A quality vegetable-tanned calf or alligator strap typically lasts 3–5 years with moderate daily use. Exposure to perspiration, water and UV rays accelerates degradation. Patina and micro-scratches are natural and desirable. Store away from excessive heat and periodically check the pin fixture.

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