Oris · Williams

Strap for Oris Williams 01 735 7740 4184

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter42 mm
Reference01 735 7740 4184
FamilyWilliams
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 Williams 01 735 7740 4184

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Williams 01 735 7740 4184, seen from the bench

The Oris Williams houses the Oris 735 caliber with hour, minute, second, date and day of the week functions. The stainless steel case measures 42mm in diameter with 24mm lugs. The model has reference 01 735 7740 4184 and is part of the Swiss brand's motorsport collection.

Frequently asked questions

What is the exact lug width of the Oris Williams 01 735 7740 4184?

The lug width of the Oris Williams 01 735 7740 4184 is precisely 24mm. This measurement refers to the distance between the inner upper and lower lugs where the strap attaches. Verifying this dimension before purchasing an aftermarket strap is essential to ensure perfect compatibility.

Which strap should I choose for the Oris Williams 01 735 7740 4184?

The 01 735 7740 4184 pairs exceptionally well with vegetable-tanned alligator straps in dark brown, structured calf leather with pronounced grain, or ballistic nylon NATO straps. For frequent aquatic use, butadiene rubber is recommended. Your choice should reflect intended usage and aesthetic preference: cognac emphasises racing heritage, navy blue adds formality, and light grey creates minimalist contrast.

How do I change the strap while protecting the spring bars?

To change a 24mm strap, use a dedicated spring bar removal tool. Position the curved tip beneath the inner spring bar, apply gentle inward pressure, and carefully extract the pin from its seat. Inspect the bar for oxidation before reinstalling. When positioning the new strap, ensure it sits perfectly parallel to the case before closing the spring bar.

Are 24mm aftermarket straps truly compatible with the Oris Williams 01 735 7740 4184?

Yes, provided the measurement is precisely 24mm. Milano Straps are crafted bespoke for this exact lug width, guaranteeing flawless fit without lateral play or excessive tension. Compatibility is absolute across leather, NATO, and rubber materials alike.

What is the expected lifespan of a leather strap on a sports watch like the Williams?

A quality leather strap subjected to regular wear on a sports watch maintains structural integrity for 4 to 6 years. Accelerated wear results from exposure to moisture and saltwater: frequent use in humid environments reduces this interval to 2 to 3 years. The natural patina developed is part of the aesthetic appeal. Alternating with rubber straps during summer months extends durability considerably.

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