Strap for WilliamsF1 Team Day Date 42 Stainless Steel / Silver / Bracelet

The Oris Williams 01 635 7613 4174-07 8 24 75 features a lug width of 20 millimetres. This measurement is essential to ensure compatibility with aftermarket straps: any strap purchased must have lugs precisely sized for 20mm to fit securely into the case attachments without play or excessive pressure. Lug width is measured using a calliper positioned between the two attachment points, reading the internal distance.

Strap selection depends on intended use. For formal and sophisticated contexts, an alligator strap with vegetable tanning in black or dark brown creates an elegant contrast with the steel case and develops a rich patina over time. For versatile daily wear, a shell cordovan leather offers compact texture and natural lustre. For sporting and informal contexts, a cotton-polyester NATO or technical rubber strap maintains the motorsport heritage of the model and ensures practicality. Milano Straps offers 20mm straps in all these materials, customisable according to aesthetic preferences.

Strap replacement is accomplished by extracting the spring bar that connects the case attachments. Using a specialised tool—a strap changer or small flat screwdriver—apply gentle pressure to the end of the spring to compress it, allowing the bar to slide out of the fixing holes. Once the bar is removed, the old strap detaches. Position the new strap by aligning the holes with the spring bar, then reinsert the bar by compressing the spring again until it is fully seated. It is advisable to perform this operation on a clean, protected surface.

Yes. Any strap with a 20mm lug width is compatible with the Williams 01 635 7613 4174-07 8 24 75. Milano Straps offers a complete collection of 20mm straps in fine leather (alligator, calf, shell cordovan with vegetable tanning), technical fabrics (NATO) and vulcanised rubber, all designed to ensure secure installation and aesthetic coherence with the model's motorsport DNA. Straps can be customised in choice of deployant clasp finish and material tone.

The lifespan of a leather strap depends on multiple factors: frequency of use, climate conditions, ambient humidity level and maintenance care. A quality artisanal strap in alligator or calf leather, subjected to vegetable tanning, develops a protective patina over time and can last 3 to 5 years with constant use, extendable to 7–10 years with moderate use and proper maintenance. Maintenance consists of keeping the strap dry, cleaning it periodically with a slightly dampened soft cloth, and protecting it from prolonged direct moisture exposure. Milano Straps provides detailed guidelines on the conservation of fine leather straps.